Finding the Fourth Proportional to 86,407.14, 129,691.70 and 53,192.07
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Solution
The fourth proportional to 86,407.14, 129,691.70 and 53,192.07 is: 79,837.96
Step by Step Solution
- Step 1: Write the proportion equation
86,407.14 : 129,691.70 = 53,192.07 : x - Step 2: Convert to fraction form
86,407.14/129,691.70 = 53,192.07/x - Step 3: Cross multiply
86,407.14x = 129,691.70 × 53,192.07 - Step 4: Simplify right side
86,407.14x = 6,898,569,718.86 - Step 5: Solve for x
x = 6,898,569,718.86/86,407.14 - Step 6: Final answer
x = 79,837.96
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.