Least Common Multiple (LCM) of 72 and 54
The least common multiple (LCM) of 72 and 54 is 216.
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 72 and 54?
First, calculate the GCD of 72 and 54 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 72 ÷ 54 = 1 remainder 18 |
| 2 | 54 ÷ 18 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 39 and 45 | 585 |
| 104 and 155 | 16120 |
| 89 and 121 | 10769 |
| 104 and 91 | 728 |
| 159 and 175 | 27825 |