Home / 87,939.49-131,690.43-61,520.53

Finding the Fourth Proportional to 87,939.49, 131,690.43 and 61,520.53

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Solution

The fourth proportional to 87,939.49, 131,690.43 and 61,520.53 is: 92,127.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,939.49 : 131,690.43 = 61,520.53 : x
  2. Step 2: Convert to fraction form
    87,939.49/131,690.43 = 61,520.53/x
  3. Step 3: Cross multiply
    87,939.49x = 131,690.43 × 61,520.53
  4. Step 4: Simplify right side
    87,939.49x = 8,101,665,049.53
  5. Step 5: Solve for x
    x = 8,101,665,049.53/87,939.49
  6. Step 6: Final answer
    x = 92,127.72

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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.