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Finding the Fourth Proportional to 68,634.73, 102,927.98 and 20,589.01

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Solution

The fourth proportional to 68,634.73, 102,927.98 and 20,589.01 is: 30,876.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,634.73 : 102,927.98 = 20,589.01 : x
  2. Step 2: Convert to fraction form
    68,634.73/102,927.98 = 20,589.01/x
  3. Step 3: Cross multiply
    68,634.73x = 102,927.98 × 20,589.01
  4. Step 4: Simplify right side
    68,634.73x = 2,119,185,685.55
  5. Step 5: Solve for x
    x = 2,119,185,685.55/68,634.73
  6. Step 6: Final answer
    x = 30,876.29

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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.