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Finding the Fourth Proportional to 68,611.82, 102,917.73 and 19,363.82

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Solution

The fourth proportional to 68,611.82, 102,917.73 and 19,363.82 is: 29,045.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,611.82 : 102,917.73 = 19,363.82 : x
  2. Step 2: Convert to fraction form
    68,611.82/102,917.73 = 19,363.82/x
  3. Step 3: Cross multiply
    68,611.82x = 102,917.73 × 19,363.82
  4. Step 4: Simplify right side
    68,611.82x = 1,992,880,398.53
  5. Step 5: Solve for x
    x = 1,992,880,398.53/68,611.82
  6. Step 6: Final answer
    x = 29,045.73

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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.