Home / 80,672.52-120,999.06-28,077.60

Finding the Fourth Proportional to 80,672.52, 120,999.06 and 28,077.60

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Solution

The fourth proportional to 80,672.52, 120,999.06 and 28,077.60 is: 42,113.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,672.52 : 120,999.06 = 28,077.60 : x
  2. Step 2: Convert to fraction form
    80,672.52/120,999.06 = 28,077.60/x
  3. Step 3: Cross multiply
    80,672.52x = 120,999.06 × 28,077.60
  4. Step 4: Simplify right side
    80,672.52x = 3,397,363,207.06
  5. Step 5: Solve for x
    x = 3,397,363,207.06/80,672.52
  6. Step 6: Final answer
    x = 42,113.02

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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.