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Finding the Fourth Proportional to 66,654.64, 91,984.28 and 36,439.48

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Solution

The fourth proportional to 66,654.64, 91,984.28 and 36,439.48 is: 50,286.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,654.64 : 91,984.28 = 36,439.48 : x
  2. Step 2: Convert to fraction form
    66,654.64/91,984.28 = 36,439.48/x
  3. Step 3: Cross multiply
    66,654.64x = 91,984.28 × 36,439.48
  4. Step 4: Simplify right side
    66,654.64x = 3,351,859,331.37
  5. Step 5: Solve for x
    x = 3,351,859,331.37/66,654.64
  6. Step 6: Final answer
    x = 50,286.96

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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.