Home / 80,786.22-121,185.81-28,194.54

Finding the Fourth Proportional to 80,786.22, 121,185.81 and 28,194.54

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Solution

The fourth proportional to 80,786.22, 121,185.81 and 28,194.54 is: 42,294.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,786.22 : 121,185.81 = 28,194.54 : x
  2. Step 2: Convert to fraction form
    80,786.22/121,185.81 = 28,194.54/x
  3. Step 3: Cross multiply
    80,786.22x = 121,185.81 × 28,194.54
  4. Step 4: Simplify right side
    80,786.22x = 3,416,778,167.48
  5. Step 5: Solve for x
    x = 3,416,778,167.48/80,786.22
  6. Step 6: Final answer
    x = 42,294.07

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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.