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Finding the Fourth Proportional to 66,175.52, 99,241.68 and 21,791.84

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Solution

The fourth proportional to 66,175.52, 99,241.68 and 21,791.84 is: 32,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,175.52 : 99,241.68 = 21,791.84 : x
  2. Step 2: Convert to fraction form
    66,175.52/99,241.68 = 21,791.84/x
  3. Step 3: Cross multiply
    66,175.52x = 99,241.68 × 21,791.84
  4. Step 4: Simplify right side
    66,175.52x = 2,162,658,811.89
  5. Step 5: Solve for x
    x = 2,162,658,811.89/66,175.52
  6. Step 6: Final answer
    x = 32,680.65

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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.