Home / 87,756.20-131,645.10-31,587.56

Finding the Fourth Proportional to 87,756.20, 131,645.10 and 31,587.56

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Solution

The fourth proportional to 87,756.20, 131,645.10 and 31,587.56 is: 47,385.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,756.20 : 131,645.10 = 31,587.56 : x
  2. Step 2: Convert to fraction form
    87,756.20/131,645.10 = 31,587.56/x
  3. Step 3: Cross multiply
    87,756.20x = 131,645.10 × 31,587.56
  4. Step 4: Simplify right side
    87,756.20x = 4,158,347,494.96
  5. Step 5: Solve for x
    x = 4,158,347,494.96/87,756.20
  6. Step 6: Final answer
    x = 47,385.23

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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.