Home / 87,469.28-131,129.16-40,068.48

Finding the Fourth Proportional to 87,469.28, 131,129.16 and 40,068.48

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Solution

The fourth proportional to 87,469.28, 131,129.16 and 40,068.48 is: 60,068.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,469.28 : 131,129.16 = 40,068.48 : x
  2. Step 2: Convert to fraction form
    87,469.28/131,129.16 = 40,068.48/x
  3. Step 3: Cross multiply
    87,469.28x = 131,129.16 × 40,068.48
  4. Step 4: Simplify right side
    87,469.28x = 5,254,146,124.88
  5. Step 5: Solve for x
    x = 5,254,146,124.88/87,469.28
  6. Step 6: Final answer
    x = 60,068.47

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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.