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Finding the Fourth Proportional to 73,245.72, 109,858.87 and 20,659.44

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Solution

The fourth proportional to 73,245.72, 109,858.87 and 20,659.44 is: 30,986.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,245.72 : 109,858.87 = 20,659.44 : x
  2. Step 2: Convert to fraction form
    73,245.72/109,858.87 = 20,659.44/x
  3. Step 3: Cross multiply
    73,245.72x = 109,858.87 × 20,659.44
  4. Step 4: Simplify right side
    73,245.72x = 2,269,622,629.94
  5. Step 5: Solve for x
    x = 2,269,622,629.94/73,245.72
  6. Step 6: Final answer
    x = 30,986.42

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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.