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Finding the Fourth Proportional to 79,649.73, 109,915.79 and 43,838.97

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Solution

The fourth proportional to 79,649.73, 109,915.79 and 43,838.97 is: 60,497.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,649.73 : 109,915.79 = 43,838.97 : x
  2. Step 2: Convert to fraction form
    79,649.73/109,915.79 = 43,838.97/x
  3. Step 3: Cross multiply
    79,649.73x = 109,915.79 × 43,838.97
  4. Step 4: Simplify right side
    79,649.73x = 4,818,594,801.14
  5. Step 5: Solve for x
    x = 4,818,594,801.14/79,649.73
  6. Step 6: Final answer
    x = 60,497.31

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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.