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Finding the Fourth Proportional to 68,562.63, 102,821.94 and 21,804.57

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Solution

The fourth proportional to 68,562.63, 102,821.94 and 21,804.57 is: 32,699.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,562.63 : 102,821.94 = 21,804.57 : x
  2. Step 2: Convert to fraction form
    68,562.63/102,821.94 = 21,804.57/x
  3. Step 3: Cross multiply
    68,562.63x = 102,821.94 × 21,804.57
  4. Step 4: Simplify right side
    68,562.63x = 2,241,988,188.27
  5. Step 5: Solve for x
    x = 2,241,988,188.27/68,562.63
  6. Step 6: Final answer
    x = 32,699.86

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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.