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Finding the Fourth Proportional to 61,189.44, 91,786.84 and 16,820.56

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Solution

The fourth proportional to 61,189.44, 91,786.84 and 16,820.56 is: 25,231.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,189.44 : 91,786.84 = 16,820.56 : x
  2. Step 2: Convert to fraction form
    61,189.44/91,786.84 = 16,820.56/x
  3. Step 3: Cross multiply
    61,189.44x = 91,786.84 × 16,820.56
  4. Step 4: Simplify right side
    61,189.44x = 1,543,906,049.43
  5. Step 5: Solve for x
    x = 1,543,906,049.43/61,189.44
  6. Step 6: Final answer
    x = 25,231.58

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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.