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Finding the Fourth Proportional to 66,867.66, 100,318.91 and 19,481.67

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Solution

The fourth proportional to 66,867.66, 100,318.91 and 19,481.67 is: 29,227.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,867.66 : 100,318.91 = 19,481.67 : x
  2. Step 2: Convert to fraction form
    66,867.66/100,318.91 = 19,481.67/x
  3. Step 3: Cross multiply
    66,867.66x = 100,318.91 × 19,481.67
  4. Step 4: Simplify right side
    66,867.66x = 1,954,379,801.97
  5. Step 5: Solve for x
    x = 1,954,379,801.97/66,867.66
  6. Step 6: Final answer
    x = 29,227.58

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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.