Home / 78,836.54-108,912.91-51,677.09

Finding the Fourth Proportional to 78,836.54, 108,912.91 and 51,677.09

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Solution

The fourth proportional to 78,836.54, 108,912.91 and 51,677.09 is: 71,392.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,836.54 : 108,912.91 = 51,677.09 : x
  2. Step 2: Convert to fraction form
    78,836.54/108,912.91 = 51,677.09/x
  3. Step 3: Cross multiply
    78,836.54x = 108,912.91 × 51,677.09
  4. Step 4: Simplify right side
    78,836.54x = 5,628,302,252.23
  5. Step 5: Solve for x
    x = 5,628,302,252.23/78,836.54
  6. Step 6: Final answer
    x = 71,392.05

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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.