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Finding the Fourth Proportional to 68,948.89, 103,410.99 and 18,348.19

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Solution

The fourth proportional to 68,948.89, 103,410.99 and 18,348.19 is: 27,519.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,948.89 : 103,410.99 = 18,348.19 : x
  2. Step 2: Convert to fraction form
    68,948.89/103,410.99 = 18,348.19/x
  3. Step 3: Cross multiply
    68,948.89x = 103,410.99 × 18,348.19
  4. Step 4: Simplify right side
    68,948.89x = 1,897,404,234.08
  5. Step 5: Solve for x
    x = 1,897,404,234.08/68,948.89
  6. Step 6: Final answer
    x = 27,519.00

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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.