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Finding the Fourth Proportional to 66,912.73, 100,368.61 and 16,992.97

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Solution

The fourth proportional to 66,912.73, 100,368.61 and 16,992.97 is: 25,489.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,912.73 : 100,368.61 = 16,992.97 : x
  2. Step 2: Convert to fraction form
    66,912.73/100,368.61 = 16,992.97/x
  3. Step 3: Cross multiply
    66,912.73x = 100,368.61 × 16,992.97
  4. Step 4: Simplify right side
    66,912.73x = 1,705,560,778.67
  5. Step 5: Solve for x
    x = 1,705,560,778.67/66,912.73
  6. Step 6: Final answer
    x = 25,489.33

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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.