Home / 81,418.45-122,145.09-25,257.34

Finding the Fourth Proportional to 81,418.45, 122,145.09 and 25,257.34

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Solution

The fourth proportional to 81,418.45, 122,145.09 and 25,257.34 is: 37,891.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,418.45 : 122,145.09 = 25,257.34 : x
  2. Step 2: Convert to fraction form
    81,418.45/122,145.09 = 25,257.34/x
  3. Step 3: Cross multiply
    81,418.45x = 122,145.09 × 25,257.34
  4. Step 4: Simplify right side
    81,418.45x = 3,085,060,067.46
  5. Step 5: Solve for x
    x = 3,085,060,067.46/81,418.45
  6. Step 6: Final answer
    x = 37,891.41

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1.5x scale

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.