Home / 81,409.17-122,131.23-25,248.09

Finding the Fourth Proportional to 81,409.17, 122,131.23 and 25,248.09

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Solution

The fourth proportional to 81,409.17, 122,131.23 and 25,248.09 is: 37,877.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,409.17 : 122,131.23 = 25,248.09 : x
  2. Step 2: Convert to fraction form
    81,409.17/122,131.23 = 25,248.09/x
  3. Step 3: Cross multiply
    81,409.17x = 122,131.23 × 25,248.09
  4. Step 4: Simplify right side
    81,409.17x = 3,083,580,286.85
  5. Step 5: Solve for x
    x = 3,083,580,286.85/81,409.17
  6. Step 6: Final answer
    x = 37,877.55

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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.