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Finding the Fourth Proportional to 80,843.43, 110,756.03 and 77,813.21

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Solution

The fourth proportional to 80,843.43, 110,756.03 and 77,813.21 is: 106,604.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,843.43 : 110,756.03 = 77,813.21 : x
  2. Step 2: Convert to fraction form
    80,843.43/110,756.03 = 77,813.21/x
  3. Step 3: Cross multiply
    80,843.43x = 110,756.03 × 77,813.21
  4. Step 4: Simplify right side
    80,843.43x = 8,618,281,485.98
  5. Step 5: Solve for x
    x = 8,618,281,485.98/80,843.43
  6. Step 6: Final answer
    x = 106,604.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.