Home / 83,974.13-125,913.78-31,362.20

Finding the Fourth Proportional to 83,974.13, 125,913.78 and 31,362.20

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Solution

The fourth proportional to 83,974.13, 125,913.78 and 31,362.20 is: 47,025.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,974.13 : 125,913.78 = 31,362.20 : x
  2. Step 2: Convert to fraction form
    83,974.13/125,913.78 = 31,362.20/x
  3. Step 3: Cross multiply
    83,974.13x = 125,913.78 × 31,362.20
  4. Step 4: Simplify right side
    83,974.13x = 3,948,933,151.12
  5. Step 5: Solve for x
    x = 3,948,933,151.12/83,974.13
  6. Step 6: Final answer
    x = 47,025.59

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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.