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Finding the Fourth Proportional to 65,365.78, 98,052.32 and 18,615

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Solution

The fourth proportional to 65,365.78, 98,052.32 and 18,615 is: 27,923.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,365.78 : 98,052.32 = 18,615 : x
  2. Step 2: Convert to fraction form
    65,365.78/98,052.32 = 18,615/x
  3. Step 3: Cross multiply
    65,365.78x = 98,052.32 × 18,615
  4. Step 4: Simplify right side
    65,365.78x = 1,825,243,936.80
  5. Step 5: Solve for x
    x = 1,825,243,936.80/65,365.78
  6. Step 6: Final answer
    x = 27,923.54

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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.