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Finding the Fourth Proportional to 80,482.60, 120,626.70 and 41,019.40

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Solution

The fourth proportional to 80,482.60, 120,626.70 and 41,019.40 is: 61,479.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,482.60 : 120,626.70 = 41,019.40 : x
  2. Step 2: Convert to fraction form
    80,482.60/120,626.70 = 41,019.40/x
  3. Step 3: Cross multiply
    80,482.60x = 120,626.70 × 41,019.40
  4. Step 4: Simplify right side
    80,482.60x = 4,948,034,857.98
  5. Step 5: Solve for x
    x = 4,948,034,857.98/80,482.60
  6. Step 6: Final answer
    x = 61,479.56

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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.