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Finding the Fourth Proportional to 66,914.54, 100,340.03 and 38,843.21

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Solution

The fourth proportional to 66,914.54, 100,340.03 and 38,843.21 is: 58,246.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,914.54 : 100,340.03 = 38,843.21 : x
  2. Step 2: Convert to fraction form
    66,914.54/100,340.03 = 38,843.21/x
  3. Step 3: Cross multiply
    66,914.54x = 100,340.03 × 38,843.21
  4. Step 4: Simplify right side
    66,914.54x = 3,897,528,640.24
  5. Step 5: Solve for x
    x = 3,897,528,640.24/66,914.54
  6. Step 6: Final answer
    x = 58,246.36

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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.