Home / 67,678.26-101,517.39-20,930.10

Finding the Fourth Proportional to 67,678.26, 101,517.39 and 20,930.10

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Solution

The fourth proportional to 67,678.26, 101,517.39 and 20,930.10 is: 31,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,678.26 : 101,517.39 = 20,930.10 : x
  2. Step 2: Convert to fraction form
    67,678.26/101,517.39 = 20,930.10/x
  3. Step 3: Cross multiply
    67,678.26x = 101,517.39 × 20,930.10
  4. Step 4: Simplify right side
    67,678.26x = 2,124,769,124.44
  5. Step 5: Solve for x
    x = 2,124,769,124.44/67,678.26
  6. Step 6: Final answer
    x = 31,395.15

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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.