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Finding the Fourth Proportional to 83,998.80, 126,016.88 and 30,690.68

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Solution

The fourth proportional to 83,998.80, 126,016.88 and 30,690.68 is: 46,042.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,998.80 : 126,016.88 = 30,690.68 : x
  2. Step 2: Convert to fraction form
    83,998.80/126,016.88 = 30,690.68/x
  3. Step 3: Cross multiply
    83,998.80x = 126,016.88 × 30,690.68
  4. Step 4: Simplify right side
    83,998.80x = 3,867,542,955.14
  5. Step 5: Solve for x
    x = 3,867,542,955.14/83,998.80
  6. Step 6: Final answer
    x = 46,042.84

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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.