Home / 80,738.43-121,029.07-38,607.63

Finding the Fourth Proportional to 80,738.43, 121,029.07 and 38,607.63

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Solution

The fourth proportional to 80,738.43, 121,029.07 and 38,607.63 is: 57,873.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,738.43 : 121,029.07 = 38,607.63 : x
  2. Step 2: Convert to fraction form
    80,738.43/121,029.07 = 38,607.63/x
  3. Step 3: Cross multiply
    80,738.43x = 121,029.07 × 38,607.63
  4. Step 4: Simplify right side
    80,738.43x = 4,672,645,553.80
  5. Step 5: Solve for x
    x = 4,672,645,553.80/80,738.43
  6. Step 6: Final answer
    x = 57,873.87

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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.