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Finding the Fourth Proportional to 66,911.73, 100,367.11 and 16,991.97

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Solution

The fourth proportional to 66,911.73, 100,367.11 and 16,991.97 is: 25,487.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,911.73 : 100,367.11 = 16,991.97 : x
  2. Step 2: Convert to fraction form
    66,911.73/100,367.11 = 16,991.97/x
  3. Step 3: Cross multiply
    66,911.73x = 100,367.11 × 16,991.97
  4. Step 4: Simplify right side
    66,911.73x = 1,705,434,922.11
  5. Step 5: Solve for x
    x = 1,705,434,922.11/66,911.73
  6. Step 6: Final answer
    x = 25,487.83

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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.