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Finding the Fourth Proportional to 71,398.28, 98,529.54 and 43,098.44

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Solution

The fourth proportional to 71,398.28, 98,529.54 and 43,098.44 is: 59,475.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,398.28 : 98,529.54 = 43,098.44 : x
  2. Step 2: Convert to fraction form
    71,398.28/98,529.54 = 43,098.44/x
  3. Step 3: Cross multiply
    71,398.28x = 98,529.54 × 43,098.44
  4. Step 4: Simplify right side
    71,398.28x = 4,246,469,467.92
  5. Step 5: Solve for x
    x = 4,246,469,467.92/71,398.28
  6. Step 6: Final answer
    x = 59,475.80

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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.