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Finding the Fourth Proportional to 91,251.80, 136,798.40 and 43,843.11

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Solution

The fourth proportional to 91,251.80, 136,798.40 and 43,843.11 is: 65,726.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,251.80 : 136,798.40 = 43,843.11 : x
  2. Step 2: Convert to fraction form
    91,251.80/136,798.40 = 43,843.11/x
  3. Step 3: Cross multiply
    91,251.80x = 136,798.40 × 43,843.11
  4. Step 4: Simplify right side
    91,251.80x = 5,997,667,299.02
  5. Step 5: Solve for x
    x = 5,997,667,299.02/91,251.80
  6. Step 6: Final answer
    x = 65,726.56

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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.