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Finding the Fourth Proportional to 68,824.97, 103,225.11 and 18,224.32

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Solution

The fourth proportional to 68,824.97, 103,225.11 and 18,224.32 is: 27,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,824.97 : 103,225.11 = 18,224.32 : x
  2. Step 2: Convert to fraction form
    68,824.97/103,225.11 = 18,224.32/x
  3. Step 3: Cross multiply
    68,824.97x = 103,225.11 × 18,224.32
  4. Step 4: Simplify right side
    68,824.97x = 1,881,207,064.75
  5. Step 5: Solve for x
    x = 1,881,207,064.75/68,824.97
  6. Step 6: Final answer
    x = 27,333.21

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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.