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Finding the Fourth Proportional to 69,212.73, 103,819.14 and 19,292.97

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Solution

The fourth proportional to 69,212.73, 103,819.14 and 19,292.97 is: 28,939.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,212.73 : 103,819.14 = 19,292.97 : x
  2. Step 2: Convert to fraction form
    69,212.73/103,819.14 = 19,292.97/x
  3. Step 3: Cross multiply
    69,212.73x = 103,819.14 × 19,292.97
  4. Step 4: Simplify right side
    69,212.73x = 2,002,979,553.45
  5. Step 5: Solve for x
    x = 2,002,979,553.45/69,212.73
  6. Step 6: Final answer
    x = 28,939.47

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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.