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Finding the Fourth Proportional to 100,453.70, 150,625.80 and 30,323.90

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Solution

The fourth proportional to 100,453.70, 150,625.80 and 30,323.90 is: 45,469.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,453.70 : 150,625.80 = 30,323.90 : x
  2. Step 2: Convert to fraction form
    100,453.70/150,625.80 = 30,323.90/x
  3. Step 3: Cross multiply
    100,453.70x = 150,625.80 × 30,323.90
  4. Step 4: Simplify right side
    100,453.70x = 4,567,561,696.62
  5. Step 5: Solve for x
    x = 4,567,561,696.62/100,453.70
  6. Step 6: Final answer
    x = 45,469.32

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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.