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Finding the Fourth Proportional to 80,021.70, 120,019.95 and 50,348.70

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Solution

The fourth proportional to 80,021.70, 120,019.95 and 50,348.70 is: 75,515.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,021.70 : 120,019.95 = 50,348.70 : x
  2. Step 2: Convert to fraction form
    80,021.70/120,019.95 = 50,348.70/x
  3. Step 3: Cross multiply
    80,021.70x = 120,019.95 × 50,348.70
  4. Step 4: Simplify right side
    80,021.70x = 6,042,848,456.57
  5. Step 5: Solve for x
    x = 6,042,848,456.57/80,021.70
  6. Step 6: Final answer
    x = 75,515.12

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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.