Home / 80,664.28-120,982.74-21,506.20

Finding the Fourth Proportional to 80,664.28, 120,982.74 and 21,506.20

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Solution

The fourth proportional to 80,664.28, 120,982.74 and 21,506.20 is: 32,255.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,664.28 : 120,982.74 = 21,506.20 : x
  2. Step 2: Convert to fraction form
    80,664.28/120,982.74 = 21,506.20/x
  3. Step 3: Cross multiply
    80,664.28x = 120,982.74 × 21,506.20
  4. Step 4: Simplify right side
    80,664.28x = 2,601,879,002.99
  5. Step 5: Solve for x
    x = 2,601,879,002.99/80,664.28
  6. Step 6: Final answer
    x = 32,255.65

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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.