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Finding the Fourth Proportional to 73,171.71, 100,976.63 and 39,637.71

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Solution

The fourth proportional to 73,171.71, 100,976.63 and 39,637.71 is: 54,699.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,171.71 : 100,976.63 = 39,637.71 : x
  2. Step 2: Convert to fraction form
    73,171.71/100,976.63 = 39,637.71/x
  3. Step 3: Cross multiply
    73,171.71x = 100,976.63 × 39,637.71
  4. Step 4: Simplify right side
    73,171.71x = 4,002,482,178.53
  5. Step 5: Solve for x
    x = 4,002,482,178.53/73,171.71
  6. Step 6: Final answer
    x = 54,699.86

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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.