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Finding the Fourth Proportional to 72,409.73, 108,473.19 and 34,404.92

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Solution

The fourth proportional to 72,409.73, 108,473.19 and 34,404.92 is: 51,540.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,409.73 : 108,473.19 = 34,404.92 : x
  2. Step 2: Convert to fraction form
    72,409.73/108,473.19 = 34,404.92/x
  3. Step 3: Cross multiply
    72,409.73x = 108,473.19 × 34,404.92
  4. Step 4: Simplify right side
    72,409.73x = 3,732,011,010.75
  5. Step 5: Solve for x
    x = 3,732,011,010.75/72,409.73
  6. Step 6: Final answer
    x = 51,540.19

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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.