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Finding the Fourth Proportional to 72,944.64, 100,662.21 and 41,112.90

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Solution

The fourth proportional to 72,944.64, 100,662.21 and 41,112.90 is: 56,735.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,944.64 : 100,662.21 = 41,112.90 : x
  2. Step 2: Convert to fraction form
    72,944.64/100,662.21 = 41,112.90/x
  3. Step 3: Cross multiply
    72,944.64x = 100,662.21 × 41,112.90
  4. Step 4: Simplify right side
    72,944.64x = 4,138,515,373.51
  5. Step 5: Solve for x
    x = 4,138,515,373.51/72,944.64
  6. Step 6: Final answer
    x = 56,735.02

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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.