Home / 85,013.44-127,520.26-31,704.61

Finding the Fourth Proportional to 85,013.44, 127,520.26 and 31,704.61

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Solution

The fourth proportional to 85,013.44, 127,520.26 and 31,704.61 is: 47,556.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,013.44 : 127,520.26 = 31,704.61 : x
  2. Step 2: Convert to fraction form
    85,013.44/127,520.26 = 31,704.61/x
  3. Step 3: Cross multiply
    85,013.44x = 127,520.26 × 31,704.61
  4. Step 4: Simplify right side
    85,013.44x = 4,042,979,314.27
  5. Step 5: Solve for x
    x = 4,042,979,314.27/85,013.44
  6. Step 6: Final answer
    x = 47,556.95

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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.