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Finding the Fourth Proportional to 79,009.97, 109,035.73 and 47,965.59

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Solution

The fourth proportional to 79,009.97, 109,035.73 and 47,965.59 is: 66,193.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,009.97 : 109,035.73 = 47,965.59 : x
  2. Step 2: Convert to fraction form
    79,009.97/109,035.73 = 47,965.59/x
  3. Step 3: Cross multiply
    79,009.97x = 109,035.73 × 47,965.59
  4. Step 4: Simplify right side
    79,009.97x = 5,229,963,180.49
  5. Step 5: Solve for x
    x = 5,229,963,180.49/79,009.97
  6. Step 6: Final answer
    x = 66,193.71

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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.