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Finding the Fourth Proportional to 79,340, 119,010.44 and 20,175.71

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Solution

The fourth proportional to 79,340, 119,010.44 and 20,175.71 is: 30,263.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,340 : 119,010.44 = 20,175.71 : x
  2. Step 2: Convert to fraction form
    79,340/119,010.44 = 20,175.71/x
  3. Step 3: Cross multiply
    79,340x = 119,010.44 × 20,175.71
  4. Step 4: Simplify right side
    79,340x = 2,401,120,124.41
  5. Step 5: Solve for x
    x = 2,401,120,124.41/79,340
  6. Step 6: Final answer
    x = 30,263.68

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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.