Home / 87,634.56-131,424-28,456.56

Finding the Fourth Proportional to 87,634.56, 131,424 and 28,456.56

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Solution

The fourth proportional to 87,634.56, 131,424 and 28,456.56 is: 42,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,634.56 : 131,424 = 28,456.56 : x
  2. Step 2: Convert to fraction form
    87,634.56/131,424 = 28,456.56/x
  3. Step 3: Cross multiply
    87,634.56x = 131,424 × 28,456.56
  4. Step 4: Simplify right side
    87,634.56x = 3,739,874,941.44
  5. Step 5: Solve for x
    x = 3,739,874,941.44/87,634.56
  6. Step 6: Final answer
    x = 42,675.80

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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.