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Finding the Fourth Proportional to 78,983.44, 108,996.88 and 43,173.44

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Solution

The fourth proportional to 78,983.44, 108,996.88 and 43,173.44 is: 59,579.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,983.44 : 108,996.88 = 43,173.44 : x
  2. Step 2: Convert to fraction form
    78,983.44/108,996.88 = 43,173.44/x
  3. Step 3: Cross multiply
    78,983.44x = 108,996.88 × 43,173.44
  4. Step 4: Simplify right side
    78,983.44x = 4,705,770,258.87
  5. Step 5: Solve for x
    x = 4,705,770,258.87/78,983.44
  6. Step 6: Final answer
    x = 59,579.20

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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.