Home / 80,788.92-121,238.73-28,198.41

Finding the Fourth Proportional to 80,788.92, 121,238.73 and 28,198.41

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Solution

The fourth proportional to 80,788.92, 121,238.73 and 28,198.41 is: 42,316.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,788.92 : 121,238.73 = 28,198.41 : x
  2. Step 2: Convert to fraction form
    80,788.92/121,238.73 = 28,198.41/x
  3. Step 3: Cross multiply
    80,788.92x = 121,238.73 × 28,198.41
  4. Step 4: Simplify right side
    80,788.92x = 3,418,739,416.42
  5. Step 5: Solve for x
    x = 3,418,739,416.42/80,788.92
  6. Step 6: Final answer
    x = 42,316.93

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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.