Home / 80,512.60-120,768.54-68,555.02

Finding the Fourth Proportional to 80,512.60, 120,768.54 and 68,555.02

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Solution

The fourth proportional to 80,512.60, 120,768.54 and 68,555.02 is: 102,832.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,512.60 : 120,768.54 = 68,555.02 : x
  2. Step 2: Convert to fraction form
    80,512.60/120,768.54 = 68,555.02/x
  3. Step 3: Cross multiply
    80,512.60x = 120,768.54 × 68,555.02
  4. Step 4: Simplify right side
    80,512.60x = 8,279,289,675.07
  5. Step 5: Solve for x
    x = 8,279,289,675.07/80,512.60
  6. Step 6: Final answer
    x = 102,832.22

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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.