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Finding the Fourth Proportional to 80,555.36, 120,797.78 and 33,138.77

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Solution

The fourth proportional to 80,555.36, 120,797.78 and 33,138.77 is: 49,693.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,555.36 : 120,797.78 = 33,138.77 : x
  2. Step 2: Convert to fraction form
    80,555.36/120,797.78 = 33,138.77/x
  3. Step 3: Cross multiply
    80,555.36x = 120,797.78 × 33,138.77
  4. Step 4: Simplify right side
    80,555.36x = 4,003,089,078.25
  5. Step 5: Solve for x
    x = 4,003,089,078.25/80,555.36
  6. Step 6: Final answer
    x = 49,693.64

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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.