Finding the Fourth Proportional to 77,278,641.24, 106,647,082.47 and 42,472,565.40
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Solution
The fourth proportional to 77,278,641.24, 106,647,082.47 and 42,472,565.40 is: 58,613,545.89
Step by Step Solution
- Step 1: Write the proportion equation
77,278,641.24 : 106,647,082.47 = 42,472,565.40 : x - Step 2: Convert to fraction form
77,278,641.24/106,647,082.47 = 42,472,565.40/x - Step 3: Cross multiply
77,278,641.24x = 106,647,082.47 × 42,472,565.40 - Step 4: Simplify right side
77,278,641.24x = 4,529,575,184,926,268 - Step 5: Solve for x
x = 4,529,575,184,926,268/77,278,641.24 - Step 6: Final answer
x = 58,613,545.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.