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Finding the Fourth Proportional to 66,871.46, 100,270.97 and 29,387.66

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Solution

The fourth proportional to 66,871.46, 100,270.97 and 29,387.66 is: 44,065.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,871.46 : 100,270.97 = 29,387.66 : x
  2. Step 2: Convert to fraction form
    66,871.46/100,270.97 = 29,387.66/x
  3. Step 3: Cross multiply
    66,871.46x = 100,270.97 × 29,387.66
  4. Step 4: Simplify right side
    66,871.46x = 2,946,728,746.34
  5. Step 5: Solve for x
    x = 2,946,728,746.34/66,871.46
  6. Step 6: Final answer
    x = 44,065.56

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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.