Home / 80,517.12-120,692.96-27,897.76

Finding the Fourth Proportional to 80,517.12, 120,692.96 and 27,897.76

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Solution

The fourth proportional to 80,517.12, 120,692.96 and 27,897.76 is: 41,817.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,517.12 : 120,692.96 = 27,897.76 : x
  2. Step 2: Convert to fraction form
    80,517.12/120,692.96 = 27,897.76/x
  3. Step 3: Cross multiply
    80,517.12x = 120,692.96 × 27,897.76
  4. Step 4: Simplify right side
    80,517.12x = 3,367,063,231.77
  5. Step 5: Solve for x
    x = 3,367,063,231.77/80,517.12
  6. Step 6: Final answer
    x = 41,817.98

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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.