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Finding the Fourth Proportional to 66,991.17, 100,456.73 and 22,606.41

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Solution

The fourth proportional to 66,991.17, 100,456.73 and 22,606.41 is: 33,899.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,991.17 : 100,456.73 = 22,606.41 : x
  2. Step 2: Convert to fraction form
    66,991.17/100,456.73 = 22,606.41/x
  3. Step 3: Cross multiply
    66,991.17x = 100,456.73 × 22,606.41
  4. Step 4: Simplify right side
    66,991.17x = 2,270,965,912.61
  5. Step 5: Solve for x
    x = 2,270,965,912.61/66,991.17
  6. Step 6: Final answer
    x = 33,899.48

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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.