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Finding the Fourth Proportional to 66,865.44, 100,209.60 and 55,794

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Solution

The fourth proportional to 66,865.44, 100,209.60 and 55,794 is: 83,617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,865.44 : 100,209.60 = 55,794 : x
  2. Step 2: Convert to fraction form
    66,865.44/100,209.60 = 55,794/x
  3. Step 3: Cross multiply
    66,865.44x = 100,209.60 × 55,794
  4. Step 4: Simplify right side
    66,865.44x = 5,591,094,422.40
  5. Step 5: Solve for x
    x = 5,591,094,422.40/66,865.44
  6. Step 6: Final answer
    x = 83,617.10

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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.