Home / 83,940.20-125,867.10-31,322.60

Finding the Fourth Proportional to 83,940.20, 125,867.10 and 31,322.60

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Solution

The fourth proportional to 83,940.20, 125,867.10 and 31,322.60 is: 46,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,940.20 : 125,867.10 = 31,322.60 : x
  2. Step 2: Convert to fraction form
    83,940.20/125,867.10 = 31,322.60/x
  3. Step 3: Cross multiply
    83,940.20x = 125,867.10 × 31,322.60
  4. Step 4: Simplify right side
    83,940.20x = 3,942,484,826.46
  5. Step 5: Solve for x
    x = 3,942,484,826.46/83,940.20
  6. Step 6: Final answer
    x = 46,967.78

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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.