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Finding the Fourth Proportional to 57,218.55, 85,655.03 and 50,306.55

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Solution

The fourth proportional to 57,218.55, 85,655.03 and 50,306.55 is: 75,307.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,218.55 : 85,655.03 = 50,306.55 : x
  2. Step 2: Convert to fraction form
    57,218.55/85,655.03 = 50,306.55/x
  3. Step 3: Cross multiply
    57,218.55x = 85,655.03 × 50,306.55
  4. Step 4: Simplify right side
    57,218.55x = 4,309,008,797.91
  5. Step 5: Solve for x
    x = 4,309,008,797.91/57,218.55
  6. Step 6: Final answer
    x = 75,307.90

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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.