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Finding the Fourth Proportional to 79,643.25, 109,906.37 and 43,832.54

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Solution

The fourth proportional to 79,643.25, 109,906.37 and 43,832.54 is: 60,488.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,643.25 : 109,906.37 = 43,832.54 : x
  2. Step 2: Convert to fraction form
    79,643.25/109,906.37 = 43,832.54/x
  3. Step 3: Cross multiply
    79,643.25x = 109,906.37 × 43,832.54
  4. Step 4: Simplify right side
    79,643.25x = 4,817,475,579.26
  5. Step 5: Solve for x
    x = 4,817,475,579.26/79,643.25
  6. Step 6: Final answer
    x = 60,488.18

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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.