Home / 87,139.20-130,706.10-24,809.70

Finding the Fourth Proportional to 87,139.20, 130,706.10 and 24,809.70

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Solution

The fourth proportional to 87,139.20, 130,706.10 and 24,809.70 is: 37,213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,139.20 : 130,706.10 = 24,809.70 : x
  2. Step 2: Convert to fraction form
    87,139.20/130,706.10 = 24,809.70/x
  3. Step 3: Cross multiply
    87,139.20x = 130,706.10 × 24,809.70
  4. Step 4: Simplify right side
    87,139.20x = 3,242,779,129.17
  5. Step 5: Solve for x
    x = 3,242,779,129.17/87,139.20
  6. Step 6: Final answer
    x = 37,213.78

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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.