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Finding the Fourth Proportional to 66,688.92, 100,061.02 and 29,229.58

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Solution

The fourth proportional to 66,688.92, 100,061.02 and 29,229.58 is: 43,856.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,688.92 : 100,061.02 = 29,229.58 : x
  2. Step 2: Convert to fraction form
    66,688.92/100,061.02 = 29,229.58/x
  3. Step 3: Cross multiply
    66,688.92x = 100,061.02 × 29,229.58
  4. Step 4: Simplify right side
    66,688.92x = 2,924,741,588.97
  5. Step 5: Solve for x
    x = 2,924,741,588.97/66,688.92
  6. Step 6: Final answer
    x = 43,856.48

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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.