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Finding the Fourth Proportional to 72,853.66, 109,163.04 and 57,340.54

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Solution

The fourth proportional to 72,853.66, 109,163.04 and 57,340.54 is: 85,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,853.66 : 109,163.04 = 57,340.54 : x
  2. Step 2: Convert to fraction form
    72,853.66/109,163.04 = 57,340.54/x
  3. Step 3: Cross multiply
    72,853.66x = 109,163.04 × 57,340.54
  4. Step 4: Simplify right side
    72,853.66x = 6,259,467,661.64
  5. Step 5: Solve for x
    x = 6,259,467,661.64/72,853.66
  6. Step 6: Final answer
    x = 85,918.37

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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.