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Finding the Fourth Proportional to 80,615.44, 120,903.72 and 25,211.44

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Solution

The fourth proportional to 80,615.44, 120,903.72 and 25,211.44 is: 37,811.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,615.44 : 120,903.72 = 25,211.44 : x
  2. Step 2: Convert to fraction form
    80,615.44/120,903.72 = 25,211.44/x
  3. Step 3: Cross multiply
    80,615.44x = 120,903.72 × 25,211.44
  4. Step 4: Simplify right side
    80,615.44x = 3,048,156,882.56
  5. Step 5: Solve for x
    x = 3,048,156,882.56/80,615.44
  6. Step 6: Final answer
    x = 37,811.08

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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.