Finding the Fourth Proportional to 98,318.99, 135,691.72 and 55,883.90
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Solution
The fourth proportional to 98,318.99, 135,691.72 and 55,883.90 is: 77,126.32
Step by Step Solution
- Step 1: Write the proportion equation
98,318.99 : 135,691.72 = 55,883.90 : x - Step 2: Convert to fraction form
98,318.99/135,691.72 = 55,883.90/x - Step 3: Cross multiply
98,318.99x = 135,691.72 × 55,883.90 - Step 4: Simplify right side
98,318.99x = 7,582,981,832.85 - Step 5: Solve for x
x = 7,582,981,832.85/98,318.99 - Step 6: Final answer
x = 77,126.32
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1.5x scale
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.