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Finding the Fourth Proportional to 83,449.58, 115,121.82 and 73,899.20

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Solution

The fourth proportional to 83,449.58, 115,121.82 and 73,899.20 is: 101,946.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,449.58 : 115,121.82 = 73,899.20 : x
  2. Step 2: Convert to fraction form
    83,449.58/115,121.82 = 73,899.20/x
  3. Step 3: Cross multiply
    83,449.58x = 115,121.82 × 73,899.20
  4. Step 4: Simplify right side
    83,449.58x = 8,507,410,400.54
  5. Step 5: Solve for x
    x = 8,507,410,400.54/83,449.58
  6. Step 6: Final answer
    x = 101,946.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.