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Finding the Fourth Proportional to 79,649.35, 109,915.26 and 43,838.59

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Solution

The fourth proportional to 79,649.35, 109,915.26 and 43,838.59 is: 60,496.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,649.35 : 109,915.26 = 43,838.59 : x
  2. Step 2: Convert to fraction form
    79,649.35/109,915.26 = 43,838.59/x
  3. Step 3: Cross multiply
    79,649.35x = 109,915.26 × 43,838.59
  4. Step 4: Simplify right side
    79,649.35x = 4,818,530,017.88
  5. Step 5: Solve for x
    x = 4,818,530,017.88/79,649.35
  6. Step 6: Final answer
    x = 60,496.79

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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.