Home / 80,628.49-120,976.05-40,626.09

Finding the Fourth Proportional to 80,628.49, 120,976.05 and 40,626.09

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Solution

The fourth proportional to 80,628.49, 120,976.05 and 40,626.09 is: 60,955.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,628.49 : 120,976.05 = 40,626.09 : x
  2. Step 2: Convert to fraction form
    80,628.49/120,976.05 = 40,626.09/x
  3. Step 3: Cross multiply
    80,628.49x = 120,976.05 × 40,626.09
  4. Step 4: Simplify right side
    80,628.49x = 4,914,784,501.15
  5. Step 5: Solve for x
    x = 4,914,784,501.15/80,628.49
  6. Step 6: Final answer
    x = 60,955.93

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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.