Home / 87,711.15-131,514.23-42,643.87

Finding the Fourth Proportional to 87,711.15, 131,514.23 and 42,643.87

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Solution

The fourth proportional to 87,711.15, 131,514.23 and 42,643.87 is: 63,940.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,711.15 : 131,514.23 = 42,643.87 : x
  2. Step 2: Convert to fraction form
    87,711.15/131,514.23 = 42,643.87/x
  3. Step 3: Cross multiply
    87,711.15x = 131,514.23 × 42,643.87
  4. Step 4: Simplify right side
    87,711.15x = 5,608,275,505.09
  5. Step 5: Solve for x
    x = 5,608,275,505.09/87,711.15
  6. Step 6: Final answer
    x = 63,940.28

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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.