Home / 87,614.10-131,421.15-31,481.10

Finding the Fourth Proportional to 87,614.10, 131,421.15 and 31,481.10

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Solution

The fourth proportional to 87,614.10, 131,421.15 and 31,481.10 is: 47,221.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,614.10 : 131,421.15 = 31,481.10 : x
  2. Step 2: Convert to fraction form
    87,614.10/131,421.15 = 31,481.10/x
  3. Step 3: Cross multiply
    87,614.10x = 131,421.15 × 31,481.10
  4. Step 4: Simplify right side
    87,614.10x = 4,137,282,365.27
  5. Step 5: Solve for x
    x = 4,137,282,365.27/87,614.10
  6. Step 6: Final answer
    x = 47,221.65

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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.