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Simplify 72:45
The simplified ratio of 72:45 is 8:5. Free ratio calculator with GCD breakdown.
8:5
GCD of 72 and 45 is 9. Simplified: 72/9 : 45/9 = 8:5
How This Was Calculated
Simplification: Divide both terms by their GCD.A:B = (A/GCD) : (B/GCD)
Solving proportions: A/B = C/D — cross-multiply to find the missing value.
Scaling: Multiply both terms by the scale factor.
Quick Reference Table
| Input | Result |
|---|---|
| 72 / 40 | 9:5 |
| 72 / 43 | 72:43 |
| 72 / 44 | 18:11 |
| 72 / 46 | 36:23 |
| 72 / 47 | 72:47 |
| 72 / 50 | 36:25 |
Frequently Asked Questions
What is a ratio?
A ratio compares two quantities by division.
How do I simplify a ratio?
Divide both numbers by their greatest common divisor (GCD).
Can ratios have decimal values?
Yes, but simplified ratios are typically expressed as whole numbers.