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Finding the Fourth Proportional to 73,171.96, 100,976.97 and 39,637.96

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Solution

The fourth proportional to 73,171.96, 100,976.97 and 39,637.96 is: 54,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,171.96 : 100,976.97 = 39,637.96 : x
  2. Step 2: Convert to fraction form
    73,171.96/100,976.97 = 39,637.96/x
  3. Step 3: Cross multiply
    73,171.96x = 100,976.97 × 39,637.96
  4. Step 4: Simplify right side
    73,171.96x = 4,002,521,097.78
  5. Step 5: Solve for x
    x = 4,002,521,097.78/73,171.96
  6. Step 6: Final answer
    x = 54,700.20

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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.