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Finding the Fourth Proportional to 79,425, 119,112.26 and 26,104.68

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Solution

The fourth proportional to 79,425, 119,112.26 and 26,104.68 is: 39,148.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,425 : 119,112.26 = 26,104.68 : x
  2. Step 2: Convert to fraction form
    79,425/119,112.26 = 26,104.68/x
  3. Step 3: Cross multiply
    79,425x = 119,112.26 × 26,104.68
  4. Step 4: Simplify right side
    79,425x = 3,109,387,300.85
  5. Step 5: Solve for x
    x = 3,109,387,300.85/79,425
  6. Step 6: Final answer
    x = 39,148.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.