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Finding the Fourth Proportional to 101,939.20, 152,911.36 and 49,338.88

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Solution

The fourth proportional to 101,939.20, 152,911.36 and 49,338.88 is: 74,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,939.20 : 152,911.36 = 49,338.88 : x
  2. Step 2: Convert to fraction form
    101,939.20/152,911.36 = 49,338.88/x
  3. Step 3: Cross multiply
    101,939.20x = 152,911.36 × 49,338.88
  4. Step 4: Simplify right side
    101,939.20x = 7,544,475,241.68
  5. Step 5: Solve for x
    x = 7,544,475,241.68/101,939.20
  6. Step 6: Final answer
    x = 74,009.56

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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.