Home / 80,581.23-120,830.13-36,169.74

Finding the Fourth Proportional to 80,581.23, 120,830.13 and 36,169.74

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Solution

The fourth proportional to 80,581.23, 120,830.13 and 36,169.74 is: 54,235.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,581.23 : 120,830.13 = 36,169.74 : x
  2. Step 2: Convert to fraction form
    80,581.23/120,830.13 = 36,169.74/x
  3. Step 3: Cross multiply
    80,581.23x = 120,830.13 × 36,169.74
  4. Step 4: Simplify right side
    80,581.23x = 4,370,394,386.27
  5. Step 5: Solve for x
    x = 4,370,394,386.27/80,581.23
  6. Step 6: Final answer
    x = 54,235.89

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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.