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Finding the Fourth Proportional to 57,410.20, 85,961.70 and 36,520.60

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Solution

The fourth proportional to 57,410.20, 85,961.70 and 36,520.60 is: 54,683.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,410.20 : 85,961.70 = 36,520.60 : x
  2. Step 2: Convert to fraction form
    57,410.20/85,961.70 = 36,520.60/x
  3. Step 3: Cross multiply
    57,410.20x = 85,961.70 × 36,520.60
  4. Step 4: Simplify right side
    57,410.20x = 3,139,372,861.02
  5. Step 5: Solve for x
    x = 3,139,372,861.02/57,410.20
  6. Step 6: Final answer
    x = 54,683.19

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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.