Home / 66,896.21-100,344.31-20,149.09

Finding the Fourth Proportional to 66,896.21, 100,344.31 and 20,149.09

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Solution

The fourth proportional to 66,896.21, 100,344.31 and 20,149.09 is: 30,223.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,896.21 : 100,344.31 = 20,149.09 : x
  2. Step 2: Convert to fraction form
    66,896.21/100,344.31 = 20,149.09/x
  3. Step 3: Cross multiply
    66,896.21x = 100,344.31 × 20,149.09
  4. Step 4: Simplify right side
    66,896.21x = 2,021,846,231.94
  5. Step 5: Solve for x
    x = 2,021,846,231.94/66,896.21
  6. Step 6: Final answer
    x = 30,223.63

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1.5x scale

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.