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Finding the Fourth Proportional to 92,279.32, 138,343.93 and 38,936.86

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Solution

The fourth proportional to 92,279.32, 138,343.93 and 38,936.86 is: 58,373.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,279.32 : 138,343.93 = 38,936.86 : x
  2. Step 2: Convert to fraction form
    92,279.32/138,343.93 = 38,936.86/x
  3. Step 3: Cross multiply
    92,279.32x = 138,343.93 × 38,936.86
  4. Step 4: Simplify right side
    92,279.32x = 5,386,678,234.26
  5. Step 5: Solve for x
    x = 5,386,678,234.26/92,279.32
  6. Step 6: Final answer
    x = 58,373.62

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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.