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Finding the Fourth Proportional to 57,003.60, 85,375.80 and 36,008.40

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Solution

The fourth proportional to 57,003.60, 85,375.80 and 36,008.40 is: 53,930.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,003.60 : 85,375.80 = 36,008.40 : x
  2. Step 2: Convert to fraction form
    57,003.60/85,375.80 = 36,008.40/x
  3. Step 3: Cross multiply
    57,003.60x = 85,375.80 × 36,008.40
  4. Step 4: Simplify right side
    57,003.60x = 3,074,245,956.72
  5. Step 5: Solve for x
    x = 3,074,245,956.72/57,003.60
  6. Step 6: Final answer
    x = 53,930.73

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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.