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Finding the Fourth Proportional to 92,279.60, 138,412.20 and 36,108.80

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Solution

The fourth proportional to 92,279.60, 138,412.20 and 36,108.80 is: 54,160.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,279.60 : 138,412.20 = 36,108.80 : x
  2. Step 2: Convert to fraction form
    92,279.60/138,412.20 = 36,108.80/x
  3. Step 3: Cross multiply
    92,279.60x = 138,412.20 × 36,108.80
  4. Step 4: Simplify right side
    92,279.60x = 4,997,898,447.36
  5. Step 5: Solve for x
    x = 4,997,898,447.36/92,279.60
  6. Step 6: Final answer
    x = 54,160.38

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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.