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Finding the Fourth Proportional to 68,164.96, 94,081.14 and 39,489.28

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Solution

The fourth proportional to 68,164.96, 94,081.14 and 39,489.28 is: 54,503.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,164.96 : 94,081.14 = 39,489.28 : x
  2. Step 2: Convert to fraction form
    68,164.96/94,081.14 = 39,489.28/x
  3. Step 3: Cross multiply
    68,164.96x = 94,081.14 × 39,489.28
  4. Step 4: Simplify right side
    68,164.96x = 3,715,196,480.18
  5. Step 5: Solve for x
    x = 3,715,196,480.18/68,164.96
  6. Step 6: Final answer
    x = 54,503.02

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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.