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Finding the Fourth Proportional to 81,662.75, 122,494.13 and 26,258.75

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Solution

The fourth proportional to 81,662.75, 122,494.13 and 26,258.75 is: 39,388.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,662.75 : 122,494.13 = 26,258.75 : x
  2. Step 2: Convert to fraction form
    81,662.75/122,494.13 = 26,258.75/x
  3. Step 3: Cross multiply
    81,662.75x = 122,494.13 × 26,258.75
  4. Step 4: Simplify right side
    81,662.75x = 3,216,542,736.14
  5. Step 5: Solve for x
    x = 3,216,542,736.14/81,662.75
  6. Step 6: Final answer
    x = 39,388.13

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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.