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Finding the Fourth Proportional to 80,655.40, 120,880.86 and 33,853.96

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Solution

The fourth proportional to 80,655.40, 120,880.86 and 33,853.96 is: 50,738.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,655.40 : 120,880.86 = 33,853.96 : x
  2. Step 2: Convert to fraction form
    80,655.40/120,880.86 = 33,853.96/x
  3. Step 3: Cross multiply
    80,655.40x = 120,880.86 × 33,853.96
  4. Step 4: Simplify right side
    80,655.40x = 4,092,295,799.21
  5. Step 5: Solve for x
    x = 4,092,295,799.21/80,655.40
  6. Step 6: Final answer
    x = 50,738.03

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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.