Home / 87,815.30-131,528.55-72,263.30

Finding the Fourth Proportional to 87,815.30, 131,528.55 and 72,263.30

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Solution

The fourth proportional to 87,815.30, 131,528.55 and 72,263.30 is: 108,234.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,815.30 : 131,528.55 = 72,263.30 : x
  2. Step 2: Convert to fraction form
    87,815.30/131,528.55 = 72,263.30/x
  3. Step 3: Cross multiply
    87,815.30x = 131,528.55 × 72,263.30
  4. Step 4: Simplify right side
    87,815.30x = 9,504,687,067.22
  5. Step 5: Solve for x
    x = 9,504,687,067.22/87,815.30
  6. Step 6: Final answer
    x = 108,234.98

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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.