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Finding the Fourth Proportional to 79,791.28, 110,106.96 and 43,979.32

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Solution

The fourth proportional to 79,791.28, 110,106.96 and 43,979.32 is: 60,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,791.28 : 110,106.96 = 43,979.32 : x
  2. Step 2: Convert to fraction form
    79,791.28/110,106.96 = 43,979.32/x
  3. Step 3: Cross multiply
    79,791.28x = 110,106.96 × 43,979.32
  4. Step 4: Simplify right side
    79,791.28x = 4,842,429,228.07
  5. Step 5: Solve for x
    x = 4,842,429,228.07/79,791.28
  6. Step 6: Final answer
    x = 60,688.70

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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.