Home / 81,240.75-121,872.78-25,085.66

Finding the Fourth Proportional to 81,240.75, 121,872.78 and 25,085.66

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Solution

The fourth proportional to 81,240.75, 121,872.78 and 25,085.66 is: 37,632.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,240.75 : 121,872.78 = 25,085.66 : x
  2. Step 2: Convert to fraction form
    81,240.75/121,872.78 = 25,085.66/x
  3. Step 3: Cross multiply
    81,240.75x = 121,872.78 × 25,085.66
  4. Step 4: Simplify right side
    81,240.75x = 3,057,258,512.97
  5. Step 5: Solve for x
    x = 3,057,258,512.97/81,240.75
  6. Step 6: Final answer
    x = 37,632.08

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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.