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Finding the Fourth Proportional to 80,371.52, 120,518.40 and 27,762.56

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Solution

The fourth proportional to 80,371.52, 120,518.40 and 27,762.56 is: 41,630.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,371.52 : 120,518.40 = 27,762.56 : x
  2. Step 2: Convert to fraction form
    80,371.52/120,518.40 = 27,762.56/x
  3. Step 3: Cross multiply
    80,371.52x = 120,518.40 × 27,762.56
  4. Step 4: Simplify right side
    80,371.52x = 3,345,899,311.10
  5. Step 5: Solve for x
    x = 3,345,899,311.10/80,371.52
  6. Step 6: Final answer
    x = 41,630.41

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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.