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Finding the Fourth Proportional to 68,830.20, 103,233 and 18,229.59

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Solution

The fourth proportional to 68,830.20, 103,233 and 18,229.59 is: 27,341.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,830.20 : 103,233 = 18,229.59 : x
  2. Step 2: Convert to fraction form
    68,830.20/103,233 = 18,229.59/x
  3. Step 3: Cross multiply
    68,830.20x = 103,233 × 18,229.59
  4. Step 4: Simplify right side
    68,830.20x = 1,881,895,264.47
  5. Step 5: Solve for x
    x = 1,881,895,264.47/68,830.20
  6. Step 6: Final answer
    x = 27,341.13

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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.