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Finding the Fourth Proportional to 80,369.79, 120,554.67 and 27,750.57

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Solution

The fourth proportional to 80,369.79, 120,554.67 and 27,750.57 is: 41,625.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,369.79 : 120,554.67 = 27,750.57 : x
  2. Step 2: Convert to fraction form
    80,369.79/120,554.67 = 27,750.57/x
  3. Step 3: Cross multiply
    80,369.79x = 120,554.67 × 27,750.57
  4. Step 4: Simplify right side
    80,369.79x = 3,345,460,460.65
  5. Step 5: Solve for x
    x = 3,345,460,460.65/80,369.79
  6. Step 6: Final answer
    x = 41,625.85

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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.