Home / 80,426.82-120,640.23-55,101.36

Finding the Fourth Proportional to 80,426.82, 120,640.23 and 55,101.36

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Solution

The fourth proportional to 80,426.82, 120,640.23 and 55,101.36 is: 82,652.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,426.82 : 120,640.23 = 55,101.36 : x
  2. Step 2: Convert to fraction form
    80,426.82/120,640.23 = 55,101.36/x
  3. Step 3: Cross multiply
    80,426.82x = 120,640.23 × 55,101.36
  4. Step 4: Simplify right side
    80,426.82x = 6,647,440,743.71
  5. Step 5: Solve for x
    x = 6,647,440,743.71/80,426.82
  6. Step 6: Final answer
    x = 82,652.04

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1.5x scale

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.