Home / 83,880.25-115,716.61-49,869.45

Finding the Fourth Proportional to 83,880.25, 115,716.61 and 49,869.45

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Solution

The fourth proportional to 83,880.25, 115,716.61 and 49,869.45 is: 68,797.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,880.25 : 115,716.61 = 49,869.45 : x
  2. Step 2: Convert to fraction form
    83,880.25/115,716.61 = 49,869.45/x
  3. Step 3: Cross multiply
    83,880.25x = 115,716.61 × 49,869.45
  4. Step 4: Simplify right side
    83,880.25x = 5,770,723,758.90
  5. Step 5: Solve for x
    x = 5,770,723,758.90/83,880.25
  6. Step 6: Final answer
    x = 68,797.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.