Home / 81,640.25-112,716.68-49,827.59

Finding the Fourth Proportional to 81,640.25, 112,716.68 and 49,827.59

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Solution

The fourth proportional to 81,640.25, 112,716.68 and 49,827.59 is: 68,794.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,640.25 : 112,716.68 = 49,827.59 : x
  2. Step 2: Convert to fraction form
    81,640.25/112,716.68 = 49,827.59/x
  3. Step 3: Cross multiply
    81,640.25x = 112,716.68 × 49,827.59
  4. Step 4: Simplify right side
    81,640.25x = 5,616,400,268.06
  5. Step 5: Solve for x
    x = 5,616,400,268.06/81,640.25
  6. Step 6: Final answer
    x = 68,794.50

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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.