Home / 83,942.40-125,899.20-31,324.80

Finding the Fourth Proportional to 83,942.40, 125,899.20 and 31,324.80

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Solution

The fourth proportional to 83,942.40, 125,899.20 and 31,324.80 is: 46,981.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,942.40 : 125,899.20 = 31,324.80 : x
  2. Step 2: Convert to fraction form
    83,942.40/125,899.20 = 31,324.80/x
  3. Step 3: Cross multiply
    83,942.40x = 125,899.20 × 31,324.80
  4. Step 4: Simplify right side
    83,942.40x = 3,943,767,260.16
  5. Step 5: Solve for x
    x = 3,943,767,260.16/83,942.40
  6. Step 6: Final answer
    x = 46,981.83

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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.