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Finding the Fourth Proportional to 100,600.56, 150,903 and 30,479.76

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Solution

The fourth proportional to 100,600.56, 150,903 and 30,479.76 is: 45,720.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,600.56 : 150,903 = 30,479.76 : x
  2. Step 2: Convert to fraction form
    100,600.56/150,903 = 30,479.76/x
  3. Step 3: Cross multiply
    100,600.56x = 150,903 × 30,479.76
  4. Step 4: Simplify right side
    100,600.56x = 4,599,487,223.28
  5. Step 5: Solve for x
    x = 4,599,487,223.28/100,600.56
  6. Step 6: Final answer
    x = 45,720.29

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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.