Home / 80,370.08-120,563.22-21,209.84

Finding the Fourth Proportional to 80,370.08, 120,563.22 and 21,209.84

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Solution

The fourth proportional to 80,370.08, 120,563.22 and 21,209.84 is: 31,816.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,370.08 : 120,563.22 = 21,209.84 : x
  2. Step 2: Convert to fraction form
    80,370.08/120,563.22 = 21,209.84/x
  3. Step 3: Cross multiply
    80,370.08x = 120,563.22 × 21,209.84
  4. Step 4: Simplify right side
    80,370.08x = 2,557,126,606.08
  5. Step 5: Solve for x
    x = 2,557,126,606.08/80,370.08
  6. Step 6: Final answer
    x = 31,816.90

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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.