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Finding the Fourth Proportional to 64,311.97, 96,471.60 and 19,945.03

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Solution

The fourth proportional to 64,311.97, 96,471.60 and 19,945.03 is: 29,918.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,311.97 : 96,471.60 = 19,945.03 : x
  2. Step 2: Convert to fraction form
    64,311.97/96,471.60 = 19,945.03/x
  3. Step 3: Cross multiply
    64,311.97x = 96,471.60 × 19,945.03
  4. Step 4: Simplify right side
    64,311.97x = 1,924,128,956.15
  5. Step 5: Solve for x
    x = 1,924,128,956.15/64,311.97
  6. Step 6: Final answer
    x = 29,918.68

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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.