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Finding the Fourth Proportional to 66,442.89, 99,705.03 and 26,481.05

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Solution

The fourth proportional to 66,442.89, 99,705.03 and 26,481.05 is: 39,737.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,442.89 : 99,705.03 = 26,481.05 : x
  2. Step 2: Convert to fraction form
    66,442.89/99,705.03 = 26,481.05/x
  3. Step 3: Cross multiply
    66,442.89x = 99,705.03 × 26,481.05
  4. Step 4: Simplify right side
    66,442.89x = 2,640,293,809.70
  5. Step 5: Solve for x
    x = 2,640,293,809.70/66,442.89
  6. Step 6: Final answer
    x = 39,737.79

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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.