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Finding the Fourth Proportional to 80,879.08, 111,609.60 and 45,073

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Solution

The fourth proportional to 80,879.08, 111,609.60 and 45,073 is: 62,198.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,879.08 : 111,609.60 = 45,073 : x
  2. Step 2: Convert to fraction form
    80,879.08/111,609.60 = 45,073/x
  3. Step 3: Cross multiply
    80,879.08x = 111,609.60 × 45,073
  4. Step 4: Simplify right side
    80,879.08x = 5,030,579,500.80
  5. Step 5: Solve for x
    x = 5,030,579,500.80/80,879.08
  6. Step 6: Final answer
    x = 62,198.77

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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.