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Finding the Fourth Proportional to 80,107.72, 110,551.56 and 51,813.40

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Solution

The fourth proportional to 80,107.72, 110,551.56 and 51,813.40 is: 71,504.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,107.72 : 110,551.56 = 51,813.40 : x
  2. Step 2: Convert to fraction form
    80,107.72/110,551.56 = 51,813.40/x
  3. Step 3: Cross multiply
    80,107.72x = 110,551.56 × 51,813.40
  4. Step 4: Simplify right side
    80,107.72x = 5,728,052,198.90
  5. Step 5: Solve for x
    x = 5,728,052,198.90/80,107.72
  6. Step 6: Final answer
    x = 71,504.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.