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Finding the Fourth Proportional to 96,649.20, 144,990 and 30,073.68

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Solution

The fourth proportional to 96,649.20, 144,990 and 30,073.68 is: 45,115.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,649.20 : 144,990 = 30,073.68 : x
  2. Step 2: Convert to fraction form
    96,649.20/144,990 = 30,073.68/x
  3. Step 3: Cross multiply
    96,649.20x = 144,990 × 30,073.68
  4. Step 4: Simplify right side
    96,649.20x = 4,360,382,863.20
  5. Step 5: Solve for x
    x = 4,360,382,863.20/96,649.20
  6. Step 6: Final answer
    x = 45,115.56

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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.