Home / 78,917.25-108,905.16-43,107.27

Finding the Fourth Proportional to 78,917.25, 108,905.16 and 43,107.27

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Solution

The fourth proportional to 78,917.25, 108,905.16 and 43,107.27 is: 59,487.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,917.25 : 108,905.16 = 43,107.27 : x
  2. Step 2: Convert to fraction form
    78,917.25/108,905.16 = 43,107.27/x
  3. Step 3: Cross multiply
    78,917.25x = 108,905.16 × 43,107.27
  4. Step 4: Simplify right side
    78,917.25x = 4,694,604,136.51
  5. Step 5: Solve for x
    x = 4,694,604,136.51/78,917.25
  6. Step 6: Final answer
    x = 59,487.68

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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.