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Finding the Fourth Proportional to 80,571.60, 120,900.60 and 33,829.20

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Solution

The fourth proportional to 80,571.60, 120,900.60 and 33,829.20 is: 50,761.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,571.60 : 120,900.60 = 33,829.20 : x
  2. Step 2: Convert to fraction form
    80,571.60/120,900.60 = 33,829.20/x
  3. Step 3: Cross multiply
    80,571.60x = 120,900.60 × 33,829.20
  4. Step 4: Simplify right side
    80,571.60x = 4,089,970,577.52
  5. Step 5: Solve for x
    x = 4,089,970,577.52/80,571.60
  6. Step 6: Final answer
    x = 50,761.94

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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.