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Finding the Fourth Proportional to 80,572.62, 120,830.85 and 33,174.12

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Solution

The fourth proportional to 80,572.62, 120,830.85 and 33,174.12 is: 49,749.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,572.62 : 120,830.85 = 33,174.12 : x
  2. Step 2: Convert to fraction form
    80,572.62/120,830.85 = 33,174.12/x
  3. Step 3: Cross multiply
    80,572.62x = 120,830.85 × 33,174.12
  4. Step 4: Simplify right side
    80,572.62x = 4,008,457,117.60
  5. Step 5: Solve for x
    x = 4,008,457,117.60/80,572.62
  6. Step 6: Final answer
    x = 49,749.62

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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.