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Finding the Fourth Proportional to 73,137.33, 109,709.82 and 20,550.87

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Solution

The fourth proportional to 73,137.33, 109,709.82 and 20,550.87 is: 30,827.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,137.33 : 109,709.82 = 20,550.87 : x
  2. Step 2: Convert to fraction form
    73,137.33/109,709.82 = 20,550.87/x
  3. Step 3: Cross multiply
    73,137.33x = 109,709.82 × 20,550.87
  4. Step 4: Simplify right side
    73,137.33x = 2,254,632,248.54
  5. Step 5: Solve for x
    x = 2,254,632,248.54/73,137.33
  6. Step 6: Final answer
    x = 30,827.38

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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.