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Finding the Fourth Proportional to 80,668.62, 120,929.13 and 33,924.78

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Solution

The fourth proportional to 80,668.62, 120,929.13 and 33,924.78 is: 50,856.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,668.62 : 120,929.13 = 33,924.78 : x
  2. Step 2: Convert to fraction form
    80,668.62/120,929.13 = 33,924.78/x
  3. Step 3: Cross multiply
    80,668.62x = 120,929.13 × 33,924.78
  4. Step 4: Simplify right side
    80,668.62x = 4,102,494,130.84
  5. Step 5: Solve for x
    x = 4,102,494,130.84/80,668.62
  6. Step 6: Final answer
    x = 50,856.13

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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.