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Finding the Fourth Proportional to 80,249.56, 120,302.76 and 38,103.64

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Solution

The fourth proportional to 80,249.56, 120,302.76 and 38,103.64 is: 57,121.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,249.56 : 120,302.76 = 38,103.64 : x
  2. Step 2: Convert to fraction form
    80,249.56/120,302.76 = 38,103.64/x
  3. Step 3: Cross multiply
    80,249.56x = 120,302.76 × 38,103.64
  4. Step 4: Simplify right side
    80,249.56x = 4,583,973,058.05
  5. Step 5: Solve for x
    x = 4,583,973,058.05/80,249.56
  6. Step 6: Final answer
    x = 57,121.47

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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.