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Finding the Fourth Proportional to 66,600.44, 99,949.97 and 31,540.20

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Solution

The fourth proportional to 66,600.44, 99,949.97 and 31,540.20 is: 47,333.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,600.44 : 99,949.97 = 31,540.20 : x
  2. Step 2: Convert to fraction form
    66,600.44/99,949.97 = 31,540.20/x
  3. Step 3: Cross multiply
    66,600.44x = 99,949.97 × 31,540.20
  4. Step 4: Simplify right side
    66,600.44x = 3,152,442,043.79
  5. Step 5: Solve for x
    x = 3,152,442,043.79/66,600.44
  6. Step 6: Final answer
    x = 47,333.65

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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.