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Finding the Fourth Proportional to 66,913.73, 100,370.11 and 16,993.97

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Solution

The fourth proportional to 66,913.73, 100,370.11 and 16,993.97 is: 25,490.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,913.73 : 100,370.11 = 16,993.97 : x
  2. Step 2: Convert to fraction form
    66,913.73/100,370.11 = 16,993.97/x
  3. Step 3: Cross multiply
    66,913.73x = 100,370.11 × 16,993.97
  4. Step 4: Simplify right side
    66,913.73x = 1,705,686,638.24
  5. Step 5: Solve for x
    x = 1,705,686,638.24/66,913.73
  6. Step 6: Final answer
    x = 25,490.83

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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.