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Finding the Fourth Proportional to 79,811.73, 110,136.87 and 43,512.39

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Solution

The fourth proportional to 79,811.73, 110,136.87 and 43,512.39 is: 60,045.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,811.73 : 110,136.87 = 43,512.39 : x
  2. Step 2: Convert to fraction form
    79,811.73/110,136.87 = 43,512.39/x
  3. Step 3: Cross multiply
    79,811.73x = 110,136.87 × 43,512.39
  4. Step 4: Simplify right side
    79,811.73x = 4,792,318,440.82
  5. Step 5: Solve for x
    x = 4,792,318,440.82/79,811.73
  6. Step 6: Final answer
    x = 60,045.29

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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.