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Finding the Fourth Proportional to 80,994.26, 121,455.74 and 36,619.22

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Solution

The fourth proportional to 80,994.26, 121,455.74 and 36,619.22 is: 54,912.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,994.26 : 121,455.74 = 36,619.22 : x
  2. Step 2: Convert to fraction form
    80,994.26/121,455.74 = 36,619.22/x
  3. Step 3: Cross multiply
    80,994.26x = 121,455.74 × 36,619.22
  4. Step 4: Simplify right side
    80,994.26x = 4,447,614,463.32
  5. Step 5: Solve for x
    x = 4,447,614,463.32/80,994.26
  6. Step 6: Final answer
    x = 54,912.71

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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.