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Finding the Fourth Proportional to 61,131.38, 91,705.60 and 27,859.82

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Solution

The fourth proportional to 61,131.38, 91,705.60 and 27,859.82 is: 41,793.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,131.38 : 91,705.60 = 27,859.82 : x
  2. Step 2: Convert to fraction form
    61,131.38/91,705.60 = 27,859.82/x
  3. Step 3: Cross multiply
    61,131.38x = 91,705.60 × 27,859.82
  4. Step 4: Simplify right side
    61,131.38x = 2,554,901,508.99
  5. Step 5: Solve for x
    x = 2,554,901,508.99/61,131.38
  6. Step 6: Final answer
    x = 41,793.62

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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.