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Finding the Fourth Proportional to 68,480.22, 94,512.09 and 39,407.99

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Solution

The fourth proportional to 68,480.22, 94,512.09 and 39,407.99 is: 54,388.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,480.22 : 94,512.09 = 39,407.99 : x
  2. Step 2: Convert to fraction form
    68,480.22/94,512.09 = 39,407.99/x
  3. Step 3: Cross multiply
    68,480.22x = 94,512.09 × 39,407.99
  4. Step 4: Simplify right side
    68,480.22x = 3,724,531,054.47
  5. Step 5: Solve for x
    x = 3,724,531,054.47/68,480.22
  6. Step 6: Final answer
    x = 54,388.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.