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Finding the Fourth Proportional to 80,374.52, 120,561.77 and 27,755.30

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Solution

The fourth proportional to 80,374.52, 120,561.77 and 27,755.30 is: 41,632.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,374.52 : 120,561.77 = 27,755.30 : x
  2. Step 2: Convert to fraction form
    80,374.52/120,561.77 = 27,755.30/x
  3. Step 3: Cross multiply
    80,374.52x = 120,561.77 × 27,755.30
  4. Step 4: Simplify right side
    80,374.52x = 3,346,227,561.46
  5. Step 5: Solve for x
    x = 3,346,227,561.46/80,374.52
  6. Step 6: Final answer
    x = 41,632.94

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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.