Home / 73,719.05-110,578.26-21,128.58

Finding the Fourth Proportional to 73,719.05, 110,578.26 and 21,128.58

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Solution

The fourth proportional to 73,719.05, 110,578.26 and 21,128.58 is: 31,692.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,719.05 : 110,578.26 = 21,128.58 : x
  2. Step 2: Convert to fraction form
    73,719.05/110,578.26 = 21,128.58/x
  3. Step 3: Cross multiply
    73,719.05x = 110,578.26 × 21,128.58
  4. Step 4: Simplify right side
    73,719.05x = 2,336,361,691.90
  5. Step 5: Solve for x
    x = 2,336,361,691.90/73,719.05
  6. Step 6: Final answer
    x = 31,692.78

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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.