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Finding the Fourth Proportional to 100,379.31, 150,530.68 and 33,801.56

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Solution

The fourth proportional to 100,379.31, 150,530.68 and 33,801.56 is: 50,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,379.31 : 150,530.68 = 33,801.56 : x
  2. Step 2: Convert to fraction form
    100,379.31/150,530.68 = 33,801.56/x
  3. Step 3: Cross multiply
    100,379.31x = 150,530.68 × 33,801.56
  4. Step 4: Simplify right side
    100,379.31x = 5,088,171,811.86
  5. Step 5: Solve for x
    x = 5,088,171,811.86/100,379.31
  6. Step 6: Final answer
    x = 50,689.45

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1.5x scale

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.