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Finding the Fourth Proportional to 66,279.75, 99,441.50 and 26,815.34

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Solution

The fourth proportional to 66,279.75, 99,441.50 and 26,815.34 is: 40,231.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,279.75 : 99,441.50 = 26,815.34 : x
  2. Step 2: Convert to fraction form
    66,279.75/99,441.50 = 26,815.34/x
  3. Step 3: Cross multiply
    66,279.75x = 99,441.50 × 26,815.34
  4. Step 4: Simplify right side
    66,279.75x = 2,666,557,001.33
  5. Step 5: Solve for x
    x = 2,666,557,001.33/66,279.75
  6. Step 6: Final answer
    x = 40,231.85

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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.