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Finding the Fourth Proportional to 71,502.60, 98,674.02 and 39,672.12

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Solution

The fourth proportional to 71,502.60, 98,674.02 and 39,672.12 is: 54,747.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,502.60 : 98,674.02 = 39,672.12 : x
  2. Step 2: Convert to fraction form
    71,502.60/98,674.02 = 39,672.12/x
  3. Step 3: Cross multiply
    71,502.60x = 98,674.02 × 39,672.12
  4. Step 4: Simplify right side
    71,502.60x = 3,914,607,562.32
  5. Step 5: Solve for x
    x = 3,914,607,562.32/71,502.60
  6. Step 6: Final answer
    x = 54,747.77

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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.