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Finding the Fourth Proportional to 66,418.85, 91,654.66 and 37,734.75

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Solution

The fourth proportional to 66,418.85, 91,654.66 and 37,734.75 is: 52,072.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,418.85 : 91,654.66 = 37,734.75 : x
  2. Step 2: Convert to fraction form
    66,418.85/91,654.66 = 37,734.75/x
  3. Step 3: Cross multiply
    66,418.85x = 91,654.66 × 37,734.75
  4. Step 4: Simplify right side
    66,418.85x = 3,458,565,705.84
  5. Step 5: Solve for x
    x = 3,458,565,705.84/66,418.85
  6. Step 6: Final answer
    x = 52,072.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.