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Finding the Fourth Proportional to 89,686, 123,766.68 and 51,982.12

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Solution

The fourth proportional to 89,686, 123,766.68 and 51,982.12 is: 71,735.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,686 : 123,766.68 = 51,982.12 : x
  2. Step 2: Convert to fraction form
    89,686/123,766.68 = 51,982.12/x
  3. Step 3: Cross multiply
    89,686x = 123,766.68 × 51,982.12
  4. Step 4: Simplify right side
    89,686x = 6,433,654,411.76
  5. Step 5: Solve for x
    x = 6,433,654,411.76/89,686
  6. Step 6: Final answer
    x = 71,735.33

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