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Finding the Fourth Proportional to 87,497.78, 131,049.72 and 61,319.39

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Solution

The fourth proportional to 87,497.78, 131,049.72 and 61,319.39 is: 91,841.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,497.78 : 131,049.72 = 61,319.39 : x
  2. Step 2: Convert to fraction form
    87,497.78/131,049.72 = 61,319.39/x
  3. Step 3: Cross multiply
    87,497.78x = 131,049.72 × 61,319.39
  4. Step 4: Simplify right side
    87,497.78x = 8,035,888,234.82
  5. Step 5: Solve for x
    x = 8,035,888,234.82/87,497.78
  6. Step 6: Final answer
    x = 91,841.06

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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.