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Finding the Fourth Proportional to 69,351, 95,717.36 and 39,543

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Solution

The fourth proportional to 69,351, 95,717.36 and 39,543 is: 54,576.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,351 : 95,717.36 = 39,543 : x
  2. Step 2: Convert to fraction form
    69,351/95,717.36 = 39,543/x
  3. Step 3: Cross multiply
    69,351x = 95,717.36 × 39,543
  4. Step 4: Simplify right side
    69,351x = 3,784,951,566.48
  5. Step 5: Solve for x
    x = 3,784,951,566.48/69,351
  6. Step 6: Final answer
    x = 54,576.74

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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.