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Finding the Fourth Proportional to 69,481.17, 104,221.01 and 16,890.71

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Solution

The fourth proportional to 69,481.17, 104,221.01 and 16,890.71 is: 25,335.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,481.17 : 104,221.01 = 16,890.71 : x
  2. Step 2: Convert to fraction form
    69,481.17/104,221.01 = 16,890.71/x
  3. Step 3: Cross multiply
    69,481.17x = 104,221.01 × 16,890.71
  4. Step 4: Simplify right side
    69,481.17x = 1,760,366,250.26
  5. Step 5: Solve for x
    x = 1,760,366,250.26/69,481.17
  6. Step 6: Final answer
    x = 25,335.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.