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Finding the Fourth Proportional to 92,290.60, 138,428.70 and 36,119.80

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Solution

The fourth proportional to 92,290.60, 138,428.70 and 36,119.80 is: 54,176.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,290.60 : 138,428.70 = 36,119.80 : x
  2. Step 2: Convert to fraction form
    92,290.60/138,428.70 = 36,119.80/x
  3. Step 3: Cross multiply
    92,290.60x = 138,428.70 × 36,119.80
  4. Step 4: Simplify right side
    92,290.60x = 5,000,016,958.26
  5. Step 5: Solve for x
    x = 5,000,016,958.26/92,290.60
  6. Step 6: Final answer
    x = 54,176.88

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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.