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Finding the Fourth Proportional to 81,358.75, 122,040.29 and 25,954.75

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Solution

The fourth proportional to 81,358.75, 122,040.29 and 25,954.75 is: 38,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,358.75 : 122,040.29 = 25,954.75 : x
  2. Step 2: Convert to fraction form
    81,358.75/122,040.29 = 25,954.75/x
  3. Step 3: Cross multiply
    81,358.75x = 122,040.29 × 25,954.75
  4. Step 4: Simplify right side
    81,358.75x = 3,167,525,216.88
  5. Step 5: Solve for x
    x = 3,167,525,216.88/81,358.75
  6. Step 6: Final answer
    x = 38,932.82

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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.