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Finding the Fourth Proportional to 30,781.62, 46,172.82 and 8,593.68

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Solution

The fourth proportional to 30,781.62, 46,172.82 and 8,593.68 is: 12,890.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,781.62 : 46,172.82 = 8,593.68 : x
  2. Step 2: Convert to fraction form
    30,781.62/46,172.82 = 8,593.68/x
  3. Step 3: Cross multiply
    30,781.62x = 46,172.82 × 8,593.68
  4. Step 4: Simplify right side
    30,781.62x = 396,794,439.78
  5. Step 5: Solve for x
    x = 396,794,439.78/30,781.62
  6. Step 6: Final answer
    x = 12,890.63

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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.