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Finding the Fourth Proportional to 81,758.26, 122,584.62 and 39,040.58

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Solution

The fourth proportional to 81,758.26, 122,584.62 and 39,040.58 is: 58,535.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,758.26 : 122,584.62 = 39,040.58 : x
  2. Step 2: Convert to fraction form
    81,758.26/122,584.62 = 39,040.58/x
  3. Step 3: Cross multiply
    81,758.26x = 122,584.62 × 39,040.58
  4. Step 4: Simplify right side
    81,758.26x = 4,785,775,116.74
  5. Step 5: Solve for x
    x = 4,785,775,116.74/81,758.26
  6. Step 6: Final answer
    x = 58,535.68

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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.