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Finding the Fourth Proportional to 66,872.40, 100,160.68 and 27,309.56

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Solution

The fourth proportional to 66,872.40, 100,160.68 and 27,309.56 is: 40,903.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,872.40 : 100,160.68 = 27,309.56 : x
  2. Step 2: Convert to fraction form
    66,872.40/100,160.68 = 27,309.56/x
  3. Step 3: Cross multiply
    66,872.40x = 100,160.68 × 27,309.56
  4. Step 4: Simplify right side
    66,872.40x = 2,735,344,100.10
  5. Step 5: Solve for x
    x = 2,735,344,100.10/66,872.40
  6. Step 6: Final answer
    x = 40,903.93

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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.