Home / 87,487.30-131,036.55-71,935.30

Finding the Fourth Proportional to 87,487.30, 131,036.55 and 71,935.30

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Solution

The fourth proportional to 87,487.30, 131,036.55 and 71,935.30 is: 107,743.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,487.30 : 131,036.55 = 71,935.30 : x
  2. Step 2: Convert to fraction form
    87,487.30/131,036.55 = 71,935.30/x
  3. Step 3: Cross multiply
    87,487.30x = 131,036.55 × 71,935.30
  4. Step 4: Simplify right side
    87,487.30x = 9,426,153,535.22
  5. Step 5: Solve for x
    x = 9,426,153,535.22/87,487.30
  6. Step 6: Final answer
    x = 107,743.11

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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.