Home / 80,211.72-120,276.09-35,214.66

Finding the Fourth Proportional to 80,211.72, 120,276.09 and 35,214.66

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Solution

The fourth proportional to 80,211.72, 120,276.09 and 35,214.66 is: 52,803.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,211.72 : 120,276.09 = 35,214.66 : x
  2. Step 2: Convert to fraction form
    80,211.72/120,276.09 = 35,214.66/x
  3. Step 3: Cross multiply
    80,211.72x = 120,276.09 × 35,214.66
  4. Step 4: Simplify right side
    80,211.72x = 4,235,481,615.48
  5. Step 5: Solve for x
    x = 4,235,481,615.48/80,211.72
  6. Step 6: Final answer
    x = 52,803.78

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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.