Home / 83,880.17-115,716.48-49,869.36

Finding the Fourth Proportional to 83,880.17, 115,716.48 and 49,869.36

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Solution

The fourth proportional to 83,880.17, 115,716.48 and 49,869.36 is: 68,797.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,880.17 : 115,716.48 = 49,869.36 : x
  2. Step 2: Convert to fraction form
    83,880.17/115,716.48 = 49,869.36/x
  3. Step 3: Cross multiply
    83,880.17x = 115,716.48 × 49,869.36
  4. Step 4: Simplify right side
    83,880.17x = 5,770,706,799.05
  5. Step 5: Solve for x
    x = 5,770,706,799.05/83,880.17
  6. Step 6: Final answer
    x = 68,797.04

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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.