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Finding the Fourth Proportional to 80,409.90, 120,586.97 and 33,011.54

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Solution

The fourth proportional to 80,409.90, 120,586.97 and 33,011.54 is: 49,505.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,409.90 : 120,586.97 = 33,011.54 : x
  2. Step 2: Convert to fraction form
    80,409.90/120,586.97 = 33,011.54/x
  3. Step 3: Cross multiply
    80,409.90x = 120,586.97 × 33,011.54
  4. Step 4: Simplify right side
    80,409.90x = 3,980,760,815.64
  5. Step 5: Solve for x
    x = 3,980,760,815.64/80,409.90
  6. Step 6: Final answer
    x = 49,505.85

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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.