Home / 57,149.27-85,729.55-19,704.42

Finding the Fourth Proportional to 57,149.27, 85,729.55 and 19,704.42

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Solution

The fourth proportional to 57,149.27, 85,729.55 and 19,704.42 is: 29,558.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,149.27 : 85,729.55 = 19,704.42 : x
  2. Step 2: Convert to fraction form
    57,149.27/85,729.55 = 19,704.42/x
  3. Step 3: Cross multiply
    57,149.27x = 85,729.55 × 19,704.42
  4. Step 4: Simplify right side
    57,149.27x = 1,689,251,059.61
  5. Step 5: Solve for x
    x = 1,689,251,059.61/57,149.27
  6. Step 6: Final answer
    x = 29,558.58

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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.