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Finding the Fourth Proportional to 66,168.76, 99,268.14 and 21,799.96

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Solution

The fourth proportional to 66,168.76, 99,268.14 and 21,799.96 is: 32,704.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,168.76 : 99,268.14 = 21,799.96 : x
  2. Step 2: Convert to fraction form
    66,168.76/99,268.14 = 21,799.96/x
  3. Step 3: Cross multiply
    66,168.76x = 99,268.14 × 21,799.96
  4. Step 4: Simplify right side
    66,168.76x = 2,164,041,481.27
  5. Step 5: Solve for x
    x = 2,164,041,481.27/66,168.76
  6. Step 6: Final answer
    x = 32,704.88

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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.