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Finding the Fourth Proportional to 92,278.60, 138,410.70 and 36,107.80

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Solution

The fourth proportional to 92,278.60, 138,410.70 and 36,107.80 is: 54,158.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,278.60 : 138,410.70 = 36,107.80 : x
  2. Step 2: Convert to fraction form
    92,278.60/138,410.70 = 36,107.80/x
  3. Step 3: Cross multiply
    92,278.60x = 138,410.70 × 36,107.80
  4. Step 4: Simplify right side
    92,278.60x = 4,997,705,873.46
  5. Step 5: Solve for x
    x = 4,997,705,873.46/92,278.60
  6. Step 6: Final answer
    x = 54,158.88

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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.