Home / 87,000.57-130,552.70-31,600.89

Finding the Fourth Proportional to 87,000.57, 130,552.70 and 31,600.89

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Solution

The fourth proportional to 87,000.57, 130,552.70 and 31,600.89 is: 47,420.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,000.57 : 130,552.70 = 31,600.89 : x
  2. Step 2: Convert to fraction form
    87,000.57/130,552.70 = 31,600.89/x
  3. Step 3: Cross multiply
    87,000.57x = 130,552.70 × 31,600.89
  4. Step 4: Simplify right side
    87,000.57x = 4,125,581,353.90
  5. Step 5: Solve for x
    x = 4,125,581,353.90/87,000.57
  6. Step 6: Final answer
    x = 47,420.16

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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.