Home / 43,115.38-64,631.06-20,620.21

Finding the Fourth Proportional to 43,115.38, 64,631.06 and 20,620.21

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Solution

The fourth proportional to 43,115.38, 64,631.06 and 20,620.21 is: 30,910.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,115.38 : 64,631.06 = 20,620.21 : x
  2. Step 2: Convert to fraction form
    43,115.38/64,631.06 = 20,620.21/x
  3. Step 3: Cross multiply
    43,115.38x = 64,631.06 × 20,620.21
  4. Step 4: Simplify right side
    43,115.38x = 1,332,705,821.16
  5. Step 5: Solve for x
    x = 1,332,705,821.16/43,115.38
  6. Step 6: Final answer
    x = 30,910.22

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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.