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Finding the Fourth Proportional to 68,874, 103,316.76 and 19,626

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Solution

The fourth proportional to 68,874, 103,316.76 and 19,626 is: 29,440.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,874 : 103,316.76 = 19,626 : x
  2. Step 2: Convert to fraction form
    68,874/103,316.76 = 19,626/x
  3. Step 3: Cross multiply
    68,874x = 103,316.76 × 19,626
  4. Step 4: Simplify right side
    68,874x = 2,027,694,731.76
  5. Step 5: Solve for x
    x = 2,027,694,731.76/68,874
  6. Step 6: Final answer
    x = 29,440.64

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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.