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Finding the Fourth Proportional to 80,679.58, 120,977.68 and 36,268.45

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Solution

The fourth proportional to 80,679.58, 120,977.68 and 36,268.45 is: 54,383.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,679.58 : 120,977.68 = 36,268.45 : x
  2. Step 2: Convert to fraction form
    80,679.58/120,977.68 = 36,268.45/x
  3. Step 3: Cross multiply
    80,679.58x = 120,977.68 × 36,268.45
  4. Step 4: Simplify right side
    80,679.58x = 4,387,672,938.20
  5. Step 5: Solve for x
    x = 4,387,672,938.20/80,679.58
  6. Step 6: Final answer
    x = 54,383.93

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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.