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Finding the Fourth Proportional to 71,319.92, 98,424.87 and 43,025

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Solution

The fourth proportional to 71,319.92, 98,424.87 and 43,025 is: 59,376.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,319.92 : 98,424.87 = 43,025 : x
  2. Step 2: Convert to fraction form
    71,319.92/98,424.87 = 43,025/x
  3. Step 3: Cross multiply
    71,319.92x = 98,424.87 × 43,025
  4. Step 4: Simplify right side
    71,319.92x = 4,234,730,031.75
  5. Step 5: Solve for x
    x = 4,234,730,031.75/71,319.92
  6. Step 6: Final answer
    x = 59,376.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.