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Finding the Fourth Proportional to 68,649.09, 94,731.15 and 38,429.30

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Solution

The fourth proportional to 68,649.09, 94,731.15 and 38,429.30 is: 53,029.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,649.09 : 94,731.15 = 38,429.30 : x
  2. Step 2: Convert to fraction form
    68,649.09/94,731.15 = 38,429.30/x
  3. Step 3: Cross multiply
    68,649.09x = 94,731.15 × 38,429.30
  4. Step 4: Simplify right side
    68,649.09x = 3,640,452,163.63
  5. Step 5: Solve for x
    x = 3,640,452,163.63/68,649.09
  6. Step 6: Final answer
    x = 53,029.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.