Home / 80,269.68-120,428.28-27,684.48

Finding the Fourth Proportional to 80,269.68, 120,428.28 and 27,684.48

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Solution

The fourth proportional to 80,269.68, 120,428.28 and 27,684.48 is: 41,534.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,269.68 : 120,428.28 = 27,684.48 : x
  2. Step 2: Convert to fraction form
    80,269.68/120,428.28 = 27,684.48/x
  3. Step 3: Cross multiply
    80,269.68x = 120,428.28 × 27,684.48
  4. Step 4: Simplify right side
    80,269.68x = 3,333,994,309.09
  5. Step 5: Solve for x
    x = 3,333,994,309.09/80,269.68
  6. Step 6: Final answer
    x = 41,534.91

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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.