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Finding the Fourth Proportional to 73,142.52, 100,936.68 and 39,608.52

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Solution

The fourth proportional to 73,142.52, 100,936.68 and 39,608.52 is: 54,659.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,142.52 : 100,936.68 = 39,608.52 : x
  2. Step 2: Convert to fraction form
    73,142.52/100,936.68 = 39,608.52/x
  3. Step 3: Cross multiply
    73,142.52x = 100,936.68 × 39,608.52
  4. Step 4: Simplify right side
    73,142.52x = 3,997,952,508.51
  5. Step 5: Solve for x
    x = 3,997,952,508.51/73,142.52
  6. Step 6: Final answer
    x = 54,659.76

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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.