Home / 87,877.13-131,815.89-31,756.88

Finding the Fourth Proportional to 87,877.13, 131,815.89 and 31,756.88

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Solution

The fourth proportional to 87,877.13, 131,815.89 and 31,756.88 is: 47,635.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,877.13 : 131,815.89 = 31,756.88 : x
  2. Step 2: Convert to fraction form
    87,877.13/131,815.89 = 31,756.88/x
  3. Step 3: Cross multiply
    87,877.13x = 131,815.89 × 31,756.88
  4. Step 4: Simplify right side
    87,877.13x = 4,186,060,988.90
  5. Step 5: Solve for x
    x = 4,186,060,988.90/87,877.13
  6. Step 6: Final answer
    x = 47,635.39

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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.