Least Common Multiple (LCM) of 48 and 72
The least common multiple (LCM) of 48 and 72 is 144.
What is the Least Common Multiple (LCM)?
The LCM of two integers is the smallest positive integer that is divisible by both numbers. It is often used to find common denominators and solve problems involving periodic events.
Formula for LCM
The LCM of two numbers can be calculated using their GCD:
LCM(a, b) = |a × b| ÷ GCD(a, b)
How to Calculate the LCM of 48 and 72?
First, calculate the GCD of 48 and 72 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 48 ÷ 72 = 0 remainder 48 |
| 2 | 72 ÷ 48 = 1 remainder 24 |
| 3 | 48 ÷ 24 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 141 and 181 | 25521 |
| 173 and 68 | 11764 |
| 77 and 146 | 11242 |
| 14 and 73 | 1022 |
| 172 and 122 | 10492 |