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Finding the Fourth Proportional to 80,322.44, 120,493.90 and 26,991.53

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Solution

The fourth proportional to 80,322.44, 120,493.90 and 26,991.53 is: 40,490.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,322.44 : 120,493.90 = 26,991.53 : x
  2. Step 2: Convert to fraction form
    80,322.44/120,493.90 = 26,991.53/x
  3. Step 3: Cross multiply
    80,322.44x = 120,493.90 × 26,991.53
  4. Step 4: Simplify right side
    80,322.44x = 3,252,314,675.70
  5. Step 5: Solve for x
    x = 3,252,314,675.70/80,322.44
  6. Step 6: Final answer
    x = 40,490.74

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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.