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Finding the Fourth Proportional to 79,791.95, 110,111.40 and 43,493.75

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Solution

The fourth proportional to 79,791.95, 110,111.40 and 43,493.75 is: 60,020.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,791.95 : 110,111.40 = 43,493.75 : x
  2. Step 2: Convert to fraction form
    79,791.95/110,111.40 = 43,493.75/x
  3. Step 3: Cross multiply
    79,791.95x = 110,111.40 × 43,493.75
  4. Step 4: Simplify right side
    79,791.95x = 4,789,157,153.19
  5. Step 5: Solve for x
    x = 4,789,157,153.19/79,791.95
  6. Step 6: Final answer
    x = 60,020.56

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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.