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Finding the Fourth Proportional to 69,640.50, 96,105.02 and 39,425.04

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Solution

The fourth proportional to 69,640.50, 96,105.02 and 39,425.04 is: 54,407.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,640.50 : 96,105.02 = 39,425.04 : x
  2. Step 2: Convert to fraction form
    69,640.50/96,105.02 = 39,425.04/x
  3. Step 3: Cross multiply
    69,640.50x = 96,105.02 × 39,425.04
  4. Step 4: Simplify right side
    69,640.50x = 3,788,944,257.70
  5. Step 5: Solve for x
    x = 3,788,944,257.70/69,640.50
  6. Step 6: Final answer
    x = 54,407.19

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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.