Home / 87,538.50-131,335.38-66,578.94

Finding the Fourth Proportional to 87,538.50, 131,335.38 and 66,578.94

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Solution

The fourth proportional to 87,538.50, 131,335.38 and 66,578.94 is: 99,889.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,538.50 : 131,335.38 = 66,578.94 : x
  2. Step 2: Convert to fraction form
    87,538.50/131,335.38 = 66,578.94/x
  3. Step 3: Cross multiply
    87,538.50x = 131,335.38 × 66,578.94
  4. Step 4: Simplify right side
    87,538.50x = 8,744,170,384.90
  5. Step 5: Solve for x
    x = 8,744,170,384.90/87,538.50
  6. Step 6: Final answer
    x = 99,889.42

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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.