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Finding the Fourth Proportional to 66,400.31, 99,592.25 and 26,919.48

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Solution

The fourth proportional to 66,400.31, 99,592.25 and 26,919.48 is: 40,375.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,400.31 : 99,592.25 = 26,919.48 : x
  2. Step 2: Convert to fraction form
    66,400.31/99,592.25 = 26,919.48/x
  3. Step 3: Cross multiply
    66,400.31x = 99,592.25 × 26,919.48
  4. Step 4: Simplify right side
    66,400.31x = 2,680,971,447.43
  5. Step 5: Solve for x
    x = 2,680,971,447.43/66,400.31
  6. Step 6: Final answer
    x = 40,375.89

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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.