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Finding the Fourth Proportional to 68,536.92, 102,659.56 and 38,939.52

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Solution

The fourth proportional to 68,536.92, 102,659.56 and 38,939.52 is: 58,326.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,536.92 : 102,659.56 = 38,939.52 : x
  2. Step 2: Convert to fraction form
    68,536.92/102,659.56 = 38,939.52/x
  3. Step 3: Cross multiply
    68,536.92x = 102,659.56 × 38,939.52
  4. Step 4: Simplify right side
    68,536.92x = 3,997,513,989.81
  5. Step 5: Solve for x
    x = 3,997,513,989.81/68,536.92
  6. Step 6: Final answer
    x = 58,326.43

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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.