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Finding the Fourth Proportional to 81,955.55, 122,938.26 and 25,797.49

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Solution

The fourth proportional to 81,955.55, 122,938.26 and 25,797.49 is: 38,697.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,955.55 : 122,938.26 = 25,797.49 : x
  2. Step 2: Convert to fraction form
    81,955.55/122,938.26 = 25,797.49/x
  3. Step 3: Cross multiply
    81,955.55x = 122,938.26 × 25,797.49
  4. Step 4: Simplify right side
    81,955.55x = 3,171,498,128.88
  5. Step 5: Solve for x
    x = 3,171,498,128.88/81,955.55
  6. Step 6: Final answer
    x = 38,697.78

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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.