Home / 81,717.26-112,783.19-68,083.68

Finding the Fourth Proportional to 81,717.26, 112,783.19 and 68,083.68

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Solution

The fourth proportional to 81,717.26, 112,783.19 and 68,083.68 is: 93,966.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717.26 : 112,783.19 = 68,083.68 : x
  2. Step 2: Convert to fraction form
    81,717.26/112,783.19 = 68,083.68/x
  3. Step 3: Cross multiply
    81,717.26x = 112,783.19 × 68,083.68
  4. Step 4: Simplify right side
    81,717.26x = 7,678,694,617.34
  5. Step 5: Solve for x
    x = 7,678,694,617.34/81,717.26
  6. Step 6: Final answer
    x = 93,966.62

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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.