Home / 87,629.40-131,456.52-28,446.12

Finding the Fourth Proportional to 87,629.40, 131,456.52 and 28,446.12

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Solution

The fourth proportional to 87,629.40, 131,456.52 and 28,446.12 is: 42,673.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,629.40 : 131,456.52 = 28,446.12 : x
  2. Step 2: Convert to fraction form
    87,629.40/131,456.52 = 28,446.12/x
  3. Step 3: Cross multiply
    87,629.40x = 131,456.52 × 28,446.12
  4. Step 4: Simplify right side
    87,629.40x = 3,739,427,942.70
  5. Step 5: Solve for x
    x = 3,739,427,942.70/87,629.40
  6. Step 6: Final answer
    x = 42,673.21

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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.