Home / 87,789.68-131,650.49-31,617.80

Finding the Fourth Proportional to 87,789.68, 131,650.49 and 31,617.80

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Solution

The fourth proportional to 87,789.68, 131,650.49 and 31,617.80 is: 47,414.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,789.68 : 131,650.49 = 31,617.80 : x
  2. Step 2: Convert to fraction form
    87,789.68/131,650.49 = 31,617.80/x
  3. Step 3: Cross multiply
    87,789.68x = 131,650.49 × 31,617.80
  4. Step 4: Simplify right side
    87,789.68x = 4,162,498,283.51
  5. Step 5: Solve for x
    x = 4,162,498,283.51/87,789.68
  6. Step 6: Final answer
    x = 47,414.44

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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.