Home / 81,679.26-112,725.09-47,684.91

Finding the Fourth Proportional to 81,679.26, 112,725.09 and 47,684.91

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Solution

The fourth proportional to 81,679.26, 112,725.09 and 47,684.91 is: 65,809.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,679.26 : 112,725.09 = 47,684.91 : x
  2. Step 2: Convert to fraction form
    81,679.26/112,725.09 = 47,684.91/x
  3. Step 3: Cross multiply
    81,679.26x = 112,725.09 × 47,684.91
  4. Step 4: Simplify right side
    81,679.26x = 5,375,285,771.39
  5. Step 5: Solve for x
    x = 5,375,285,771.39/81,679.26
  6. Step 6: Final answer
    x = 65,809.68

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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.