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Simplify 90:45
The simplified ratio of 90:45 is 2:1. Free ratio calculator with GCD breakdown.
2:1
GCD of 90 and 45 is 45. Simplified: 90/45 : 45/45 = 2:1
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 |
|---|---|
| 90 / 40 | 9:4 |
| 90 / 43 | 90:43 |
| 90 / 44 | 45:22 |
| 90 / 46 | 45:23 |
| 90 / 47 | 90:47 |
| 90 / 50 | 9:5 |
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.