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Finding the Fourth Proportional to 80,426.88, 120,661.92 and 35,452.08

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Solution

The fourth proportional to 80,426.88, 120,661.92 and 35,452.08 is: 53,187.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,426.88 : 120,661.92 = 35,452.08 : x
  2. Step 2: Convert to fraction form
    80,426.88/120,661.92 = 35,452.08/x
  3. Step 3: Cross multiply
    80,426.88x = 120,661.92 × 35,452.08
  4. Step 4: Simplify right side
    80,426.88x = 4,277,716,040.79
  5. Step 5: Solve for x
    x = 4,277,716,040.79/80,426.88
  6. Step 6: Final answer
    x = 53,187.64

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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.