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Finding the Fourth Proportional to 80,960.84, 120,627.26 and 76,433.75

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Solution

The fourth proportional to 80,960.84, 120,627.26 and 76,433.75 is: 113,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,960.84 : 120,627.26 = 76,433.75 : x
  2. Step 2: Convert to fraction form
    80,960.84/120,627.26 = 76,433.75/x
  3. Step 3: Cross multiply
    80,960.84x = 120,627.26 × 76,433.75
  4. Step 4: Simplify right side
    80,960.84x = 9,219,993,834.03
  5. Step 5: Solve for x
    x = 9,219,993,834.03/80,960.84
  6. Step 6: Final answer
    x = 113,882.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.