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Finding the Fourth Proportional to 66,654.05, 91,982.63 and 36,438.89

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Solution

The fourth proportional to 66,654.05, 91,982.63 and 36,438.89 is: 50,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,654.05 : 91,982.63 = 36,438.89 : x
  2. Step 2: Convert to fraction form
    66,654.05/91,982.63 = 36,438.89/x
  3. Step 3: Cross multiply
    66,654.05x = 91,982.63 × 36,438.89
  4. Step 4: Simplify right side
    66,654.05x = 3,351,744,567.66
  5. Step 5: Solve for x
    x = 3,351,744,567.66/66,654.05
  6. Step 6: Final answer
    x = 50,285.69

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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.