Home / 87,387.56-130,780.14-53,631.16

Finding the Fourth Proportional to 87,387.56, 130,780.14 and 53,631.16

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Solution

The fourth proportional to 87,387.56, 130,780.14 and 53,631.16 is: 80,261.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,387.56 : 130,780.14 = 53,631.16 : x
  2. Step 2: Convert to fraction form
    87,387.56/130,780.14 = 53,631.16/x
  3. Step 3: Cross multiply
    87,387.56x = 130,780.14 × 53,631.16
  4. Step 4: Simplify right side
    87,387.56x = 7,013,890,613.16
  5. Step 5: Solve for x
    x = 7,013,890,613.16/87,387.56
  6. Step 6: Final answer
    x = 80,261.89

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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.