Home / 68,725.76-103,076.32-31,277.12

Finding the Fourth Proportional to 68,725.76, 103,076.32 and 31,277.12

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Solution

The fourth proportional to 68,725.76, 103,076.32 and 31,277.12 is: 46,910.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,725.76 : 103,076.32 = 31,277.12 : x
  2. Step 2: Convert to fraction form
    68,725.76/103,076.32 = 31,277.12/x
  3. Step 3: Cross multiply
    68,725.76x = 103,076.32 × 31,277.12
  4. Step 4: Simplify right side
    68,725.76x = 3,223,930,429.80
  5. Step 5: Solve for x
    x = 3,223,930,429.80/68,725.76
  6. Step 6: Final answer
    x = 46,910.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.