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Finding the Fourth Proportional to 79,563.45, 109,749.37 and 47,286.75

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Solution

The fourth proportional to 79,563.45, 109,749.37 and 47,286.75 is: 65,227.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,563.45 : 109,749.37 = 47,286.75 : x
  2. Step 2: Convert to fraction form
    79,563.45/109,749.37 = 47,286.75/x
  3. Step 3: Cross multiply
    79,563.45x = 109,749.37 × 47,286.75
  4. Step 4: Simplify right side
    79,563.45x = 5,189,691,021.85
  5. Step 5: Solve for x
    x = 5,189,691,021.85/79,563.45
  6. Step 6: Final answer
    x = 65,227.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.