Home / 87,472.20-131,175.90-28,309.80

Finding the Fourth Proportional to 87,472.20, 131,175.90 and 28,309.80

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Solution

The fourth proportional to 87,472.20, 131,175.90 and 28,309.80 is: 42,454.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,472.20 : 131,175.90 = 28,309.80 : x
  2. Step 2: Convert to fraction form
    87,472.20/131,175.90 = 28,309.80/x
  3. Step 3: Cross multiply
    87,472.20x = 131,175.90 × 28,309.80
  4. Step 4: Simplify right side
    87,472.20x = 3,713,563,493.82
  5. Step 5: Solve for x
    x = 3,713,563,493.82/87,472.20
  6. Step 6: Final answer
    x = 42,454.21

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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.