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Finding the Fourth Proportional to 79,139.95, 109,213.15 and 43,329.97

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Solution

The fourth proportional to 79,139.95, 109,213.15 and 43,329.97 is: 59,795.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,139.95 : 109,213.15 = 43,329.97 : x
  2. Step 2: Convert to fraction form
    79,139.95/109,213.15 = 43,329.97/x
  3. Step 3: Cross multiply
    79,139.95x = 109,213.15 × 43,329.97
  4. Step 4: Simplify right side
    79,139.95x = 4,732,202,296.46
  5. Step 5: Solve for x
    x = 4,732,202,296.46/79,139.95
  6. Step 6: Final answer
    x = 59,795.37

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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.