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Finding the Fourth Proportional to 80,069.89, 120,109.79 and 26,766.67

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Solution

The fourth proportional to 80,069.89, 120,109.79 and 26,766.67 is: 40,151.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,069.89 : 120,109.79 = 26,766.67 : x
  2. Step 2: Convert to fraction form
    80,069.89/120,109.79 = 26,766.67/x
  3. Step 3: Cross multiply
    80,069.89x = 120,109.79 × 26,766.67
  4. Step 4: Simplify right side
    80,069.89x = 3,214,938,478.69
  5. Step 5: Solve for x
    x = 3,214,938,478.69/80,069.89
  6. Step 6: Final answer
    x = 40,151.65

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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.