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Finding the Fourth Proportional to 57,324.60, 85,986.90 and 38,662.20

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Solution

The fourth proportional to 57,324.60, 85,986.90 and 38,662.20 is: 57,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,324.60 : 85,986.90 = 38,662.20 : x
  2. Step 2: Convert to fraction form
    57,324.60/85,986.90 = 38,662.20/x
  3. Step 3: Cross multiply
    57,324.60x = 85,986.90 × 38,662.20
  4. Step 4: Simplify right side
    57,324.60x = 3,324,442,725.18
  5. Step 5: Solve for x
    x = 3,324,442,725.18/57,324.60
  6. Step 6: Final answer
    x = 57,993.30

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Double scale
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Similar ratio
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1.5x scale

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.