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Finding the Fourth Proportional to 71,380.53, 98,505.18 and 39,549.96

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Solution

The fourth proportional to 71,380.53, 98,505.18 and 39,549.96 is: 54,578.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,380.53 : 98,505.18 = 39,549.96 : x
  2. Step 2: Convert to fraction form
    71,380.53/98,505.18 = 39,549.96/x
  3. Step 3: Cross multiply
    71,380.53x = 98,505.18 × 39,549.96
  4. Step 4: Simplify right side
    71,380.53x = 3,895,875,928.79
  5. Step 5: Solve for x
    x = 3,895,875,928.79/71,380.53
  6. Step 6: Final answer
    x = 54,578.97

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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.