Home / 81,640.12-112,668.42-54,369.44

Finding the Fourth Proportional to 81,640.12, 112,668.42 and 54,369.44

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Solution

The fourth proportional to 81,640.12, 112,668.42 and 54,369.44 is: 75,033.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,640.12 : 112,668.42 = 54,369.44 : x
  2. Step 2: Convert to fraction form
    81,640.12/112,668.42 = 54,369.44/x
  3. Step 3: Cross multiply
    81,640.12x = 112,668.42 × 54,369.44
  4. Step 4: Simplify right side
    81,640.12x = 6,125,718,901.08
  5. Step 5: Solve for x
    x = 6,125,718,901.08/81,640.12
  6. Step 6: Final answer
    x = 75,033.19

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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.