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Finding the Fourth Proportional to 57,287.80, 85,758.90 and 50,375.80

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Solution

The fourth proportional to 57,287.80, 85,758.90 and 50,375.80 is: 75,411.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,287.80 : 85,758.90 = 50,375.80 : x
  2. Step 2: Convert to fraction form
    57,287.80/85,758.90 = 50,375.80/x
  3. Step 3: Cross multiply
    57,287.80x = 85,758.90 × 50,375.80
  4. Step 4: Simplify right side
    57,287.80x = 4,320,173,194.62
  5. Step 5: Solve for x
    x = 4,320,173,194.62/57,287.80
  6. Step 6: Final answer
    x = 75,411.75

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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.