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Finding the Fourth Proportional to 104,992.70, 144,886.25 and 57,245.09

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Solution

The fourth proportional to 104,992.70, 144,886.25 and 57,245.09 is: 78,996.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,992.70 : 144,886.25 = 57,245.09 : x
  2. Step 2: Convert to fraction form
    104,992.70/144,886.25 = 57,245.09/x
  3. Step 3: Cross multiply
    104,992.70x = 144,886.25 × 57,245.09
  4. Step 4: Simplify right side
    104,992.70x = 8,294,025,839.69
  5. Step 5: Solve for x
    x = 8,294,025,839.69/104,992.70
  6. Step 6: Final answer
    x = 78,996.22

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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.