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Finding the Fourth Proportional to 65,174.60, 89,944.46 and 39,676.92

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Solution

The fourth proportional to 65,174.60, 89,944.46 and 39,676.92 is: 54,756.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,174.60 : 89,944.46 = 39,676.92 : x
  2. Step 2: Convert to fraction form
    65,174.60/89,944.46 = 39,676.92/x
  3. Step 3: Cross multiply
    65,174.60x = 89,944.46 × 39,676.92
  4. Step 4: Simplify right side
    65,174.60x = 3,568,719,143.86
  5. Step 5: Solve for x
    x = 3,568,719,143.86/65,174.60
  6. Step 6: Final answer
    x = 54,756.29

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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.