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Finding the Fourth Proportional to 73,171.56, 100,976.94 and 39,637.56

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Solution

The fourth proportional to 73,171.56, 100,976.94 and 39,637.56 is: 54,699.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,171.56 : 100,976.94 = 39,637.56 : x
  2. Step 2: Convert to fraction form
    73,171.56/100,976.94 = 39,637.56/x
  3. Step 3: Cross multiply
    73,171.56x = 100,976.94 × 39,637.56
  4. Step 4: Simplify right side
    73,171.56x = 4,002,479,517.87
  5. Step 5: Solve for x
    x = 4,002,479,517.87/73,171.56
  6. Step 6: Final answer
    x = 54,699.93

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1.5x scale

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.