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Finding the Fourth Proportional to 68,562.52, 102,854.74 and 21,166.47

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Solution

The fourth proportional to 68,562.52, 102,854.74 and 21,166.47 is: 31,753.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,562.52 : 102,854.74 = 21,166.47 : x
  2. Step 2: Convert to fraction form
    68,562.52/102,854.74 = 21,166.47/x
  3. Step 3: Cross multiply
    68,562.52x = 102,854.74 × 21,166.47
  4. Step 4: Simplify right side
    68,562.52x = 2,177,072,180.73
  5. Step 5: Solve for x
    x = 2,177,072,180.73/68,562.52
  6. Step 6: Final answer
    x = 31,753.09

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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.