Home / 80,512.46-120,771.42-21,354.12

Finding the Fourth Proportional to 80,512.46, 120,771.42 and 21,354.12

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Solution

The fourth proportional to 80,512.46, 120,771.42 and 21,354.12 is: 32,031.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,512.46 : 120,771.42 = 21,354.12 : x
  2. Step 2: Convert to fraction form
    80,512.46/120,771.42 = 21,354.12/x
  3. Step 3: Cross multiply
    80,512.46x = 120,771.42 × 21,354.12
  4. Step 4: Simplify right side
    80,512.46x = 2,578,967,395.25
  5. Step 5: Solve for x
    x = 2,578,967,395.25/80,512.46
  6. Step 6: Final answer
    x = 32,031.90

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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.