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Finding the Fourth Proportional to 68,597.60, 102,903.78 and 21,839.54

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Solution

The fourth proportional to 68,597.60, 102,903.78 and 21,839.54 is: 32,761.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,597.60 : 102,903.78 = 21,839.54 : x
  2. Step 2: Convert to fraction form
    68,597.60/102,903.78 = 21,839.54/x
  3. Step 3: Cross multiply
    68,597.60x = 102,903.78 × 21,839.54
  4. Step 4: Simplify right side
    68,597.60x = 2,247,371,219.46
  5. Step 5: Solve for x
    x = 2,247,371,219.46/68,597.60
  6. Step 6: Final answer
    x = 32,761.66

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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.