Home / 87,979.20-131,830.35-68,037.54

Finding the Fourth Proportional to 87,979.20, 131,830.35 and 68,037.54

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Solution

The fourth proportional to 87,979.20, 131,830.35 and 68,037.54 is: 101,949.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,979.20 : 131,830.35 = 68,037.54 : x
  2. Step 2: Convert to fraction form
    87,979.20/131,830.35 = 68,037.54/x
  3. Step 3: Cross multiply
    87,979.20x = 131,830.35 × 68,037.54
  4. Step 4: Simplify right side
    87,979.20x = 8,969,412,711.34
  5. Step 5: Solve for x
    x = 8,969,412,711.34/87,979.20
  6. Step 6: Final answer
    x = 101,949.24

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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.