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Finding the Fourth Proportional to 69,687.56, 96,169.86 and 39,472.13

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Solution

The fourth proportional to 69,687.56, 96,169.86 and 39,472.13 is: 54,472.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,687.56 : 96,169.86 = 39,472.13 : x
  2. Step 2: Convert to fraction form
    69,687.56/96,169.86 = 39,472.13/x
  3. Step 3: Cross multiply
    69,687.56x = 96,169.86 × 39,472.13
  4. Step 4: Simplify right side
    69,687.56x = 3,796,028,735.15
  5. Step 5: Solve for x
    x = 3,796,028,735.15/69,687.56
  6. Step 6: Final answer
    x = 54,472.12

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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.