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Finding the Fourth Proportional to 68,383.49, 102,755.64 and 36,816.89

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Solution

The fourth proportional to 68,383.49, 102,755.64 and 36,816.89 is: 55,322.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,383.49 : 102,755.64 = 36,816.89 : x
  2. Step 2: Convert to fraction form
    68,383.49/102,755.64 = 36,816.89/x
  3. Step 3: Cross multiply
    68,383.49x = 102,755.64 × 36,816.89
  4. Step 4: Simplify right side
    68,383.49x = 3,783,142,580.98
  5. Step 5: Solve for x
    x = 3,783,142,580.98/68,383.49
  6. Step 6: Final answer
    x = 55,322.46

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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.