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Finding the Fourth Proportional to 68,829, 103,243.52 and 19,581

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Solution

The fourth proportional to 68,829, 103,243.52 and 19,581 is: 29,371.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,829 : 103,243.52 = 19,581 : x
  2. Step 2: Convert to fraction form
    68,829/103,243.52 = 19,581/x
  3. Step 3: Cross multiply
    68,829x = 103,243.52 × 19,581
  4. Step 4: Simplify right side
    68,829x = 2,021,611,365.12
  5. Step 5: Solve for x
    x = 2,021,611,365.12/68,829
  6. Step 6: Final answer
    x = 29,371.51

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.