Finding the Fourth Proportional to 86,680.99, 130,012.17 and 58,780.14
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Solution
The fourth proportional to 86,680.99, 130,012.17 and 58,780.14 is: 88,163.89
Step by Step Solution
- Step 1: Write the proportion equation
86,680.99 : 130,012.17 = 58,780.14 : x - Step 2: Convert to fraction form
86,680.99/130,012.17 = 58,780.14/x - Step 3: Cross multiply
86,680.99x = 130,012.17 × 58,780.14 - Step 4: Simplify right side
86,680.99x = 7,642,132,904.24 - Step 5: Solve for x
x = 7,642,132,904.24/86,680.99 - Step 6: Final answer
x = 88,163.89
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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.