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Finding the Fourth Proportional to 72,494.48, 100,239.72 and 63,163.28

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Solution

The fourth proportional to 72,494.48, 100,239.72 and 63,163.28 is: 87,337.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,494.48 : 100,239.72 = 63,163.28 : x
  2. Step 2: Convert to fraction form
    72,494.48/100,239.72 = 63,163.28/x
  3. Step 3: Cross multiply
    72,494.48x = 100,239.72 × 63,163.28
  4. Step 4: Simplify right side
    72,494.48x = 6,331,469,501.48
  5. Step 5: Solve for x
    x = 6,331,469,501.48/72,494.48
  6. Step 6: Final answer
    x = 87,337.26

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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.