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Finding the Fourth Proportional to 57,117.60, 85,676.40 and 40,496.40

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Solution

The fourth proportional to 57,117.60, 85,676.40 and 40,496.40 is: 60,744.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,117.60 : 85,676.40 = 40,496.40 : x
  2. Step 2: Convert to fraction form
    57,117.60/85,676.40 = 40,496.40/x
  3. Step 3: Cross multiply
    57,117.60x = 85,676.40 × 40,496.40
  4. Step 4: Simplify right side
    57,117.60x = 3,469,585,764.96
  5. Step 5: Solve for x
    x = 3,469,585,764.96/57,117.60
  6. Step 6: Final answer
    x = 60,744.60

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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.