Home / 31,939.20-47,851.20-27,331.20

Finding the Fourth Proportional to 31,939.20, 47,851.20 and 27,331.20

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Solution

The fourth proportional to 31,939.20, 47,851.20 and 27,331.20 is: 40,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,939.20 : 47,851.20 = 27,331.20 : x
  2. Step 2: Convert to fraction form
    31,939.20/47,851.20 = 27,331.20/x
  3. Step 3: Cross multiply
    31,939.20x = 47,851.20 × 27,331.20
  4. Step 4: Simplify right side
    31,939.20x = 1,307,830,717.44
  5. Step 5: Solve for x
    x = 1,307,830,717.44/31,939.20
  6. Step 6: Final answer
    x = 40,947.51

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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.