Home / 87,721.76-131,602.08-40,949.12

Finding the Fourth Proportional to 87,721.76, 131,602.08 and 40,949.12

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Solution

The fourth proportional to 87,721.76, 131,602.08 and 40,949.12 is: 61,432.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,721.76 : 131,602.08 = 40,949.12 : x
  2. Step 2: Convert to fraction form
    87,721.76/131,602.08 = 40,949.12/x
  3. Step 3: Cross multiply
    87,721.76x = 131,602.08 × 40,949.12
  4. Step 4: Simplify right side
    87,721.76x = 5,388,989,366.17
  5. Step 5: Solve for x
    x = 5,388,989,366.17/87,721.76
  6. Step 6: Final answer
    x = 61,432.75

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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.