Home / 57,747.40-86,621.10-54,248.20

Finding the Fourth Proportional to 57,747.40, 86,621.10 and 54,248.20

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Solution

The fourth proportional to 57,747.40, 86,621.10 and 54,248.20 is: 81,372.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,747.40 : 86,621.10 = 54,248.20 : x
  2. Step 2: Convert to fraction form
    57,747.40/86,621.10 = 54,248.20/x
  3. Step 3: Cross multiply
    57,747.40x = 86,621.10 × 54,248.20
  4. Step 4: Simplify right side
    57,747.40x = 4,699,038,757.02
  5. Step 5: Solve for x
    x = 4,699,038,757.02/57,747.40
  6. Step 6: Final answer
    x = 81,372.30

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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.