Home / 87,635.80-131,453.70-54,458.20

Finding the Fourth Proportional to 87,635.80, 131,453.70 and 54,458.20

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Solution

The fourth proportional to 87,635.80, 131,453.70 and 54,458.20 is: 81,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,635.80 : 131,453.70 = 54,458.20 : x
  2. Step 2: Convert to fraction form
    87,635.80/131,453.70 = 54,458.20/x
  3. Step 3: Cross multiply
    87,635.80x = 131,453.70 × 54,458.20
  4. Step 4: Simplify right side
    87,635.80x = 7,158,731,885.34
  5. Step 5: Solve for x
    x = 7,158,731,885.34/87,635.80
  6. Step 6: Final answer
    x = 81,687.30

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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.