Home / 80,644.14-120,979.17-28,068.66

Finding the Fourth Proportional to 80,644.14, 120,979.17 and 28,068.66

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Solution

The fourth proportional to 80,644.14, 120,979.17 and 28,068.66 is: 42,107.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,644.14 : 120,979.17 = 28,068.66 : x
  2. Step 2: Convert to fraction form
    80,644.14/120,979.17 = 28,068.66/x
  3. Step 3: Cross multiply
    80,644.14x = 120,979.17 × 28,068.66
  4. Step 4: Simplify right side
    80,644.14x = 3,395,723,189.81
  5. Step 5: Solve for x
    x = 3,395,723,189.81/80,644.14
  6. Step 6: Final answer
    x = 42,107.50

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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.