Home / 81,249.85-121,855.25-33,865.61

Finding the Fourth Proportional to 81,249.85, 121,855.25 and 33,865.61

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Solution

The fourth proportional to 81,249.85, 121,855.25 and 33,865.61 is: 50,790.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,249.85 : 121,855.25 = 33,865.61 : x
  2. Step 2: Convert to fraction form
    81,249.85/121,855.25 = 33,865.61/x
  3. Step 3: Cross multiply
    81,249.85x = 121,855.25 × 33,865.61
  4. Step 4: Simplify right side
    81,249.85x = 4,126,701,848.34
  5. Step 5: Solve for x
    x = 4,126,701,848.34/81,249.85
  6. Step 6: Final answer
    x = 50,790.27

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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.