Home / 87,855.30-131,791.04-28,691.28

Finding the Fourth Proportional to 87,855.30, 131,791.04 and 28,691.28

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Solution

The fourth proportional to 87,855.30, 131,791.04 and 28,691.28 is: 43,039.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,855.30 : 131,791.04 = 28,691.28 : x
  2. Step 2: Convert to fraction form
    87,855.30/131,791.04 = 28,691.28/x
  3. Step 3: Cross multiply
    87,855.30x = 131,791.04 × 28,691.28
  4. Step 4: Simplify right side
    87,855.30x = 3,781,252,971.18
  5. Step 5: Solve for x
    x = 3,781,252,971.18/87,855.30
  6. Step 6: Final answer
    x = 43,039.56

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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.