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Finding the Fourth Proportional to 68,388.93, 102,763.79 and 36,822.33

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Solution

The fourth proportional to 68,388.93, 102,763.79 and 36,822.33 is: 55,330.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,388.93 : 102,763.79 = 36,822.33 : x
  2. Step 2: Convert to fraction form
    68,388.93/102,763.79 = 36,822.33/x
  3. Step 3: Cross multiply
    68,388.93x = 102,763.79 × 36,822.33
  4. Step 4: Simplify right side
    68,388.93x = 3,784,001,673.61
  5. Step 5: Solve for x
    x = 3,784,001,673.61/68,388.93
  6. Step 6: Final answer
    x = 55,330.62

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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.