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Finding the Fourth Proportional to 57,125.20, 85,687.80 and 33,739.60

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Solution

The fourth proportional to 57,125.20, 85,687.80 and 33,739.60 is: 50,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,125.20 : 85,687.80 = 33,739.60 : x
  2. Step 2: Convert to fraction form
    57,125.20/85,687.80 = 33,739.60/x
  3. Step 3: Cross multiply
    57,125.20x = 85,687.80 × 33,739.60
  4. Step 4: Simplify right side
    57,125.20x = 2,891,072,096.88
  5. Step 5: Solve for x
    x = 2,891,072,096.88/57,125.20
  6. Step 6: Final answer
    x = 50,609.40

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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.