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Finding the Fourth Proportional to 57,375.78, 85,966.60 and 35,142.78

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Solution

The fourth proportional to 57,375.78, 85,966.60 and 35,142.78 is: 52,654.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,375.78 : 85,966.60 = 35,142.78 : x
  2. Step 2: Convert to fraction form
    57,375.78/85,966.60 = 35,142.78/x
  3. Step 3: Cross multiply
    57,375.78x = 85,966.60 × 35,142.78
  4. Step 4: Simplify right side
    57,375.78x = 3,021,105,311.15
  5. Step 5: Solve for x
    x = 3,021,105,311.15/57,375.78
  6. Step 6: Final answer
    x = 52,654.71

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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.