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Finding the Fourth Proportional to 79,711, 110,004.10 and 49,513

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Solution

The fourth proportional to 79,711, 110,004.10 and 49,513 is: 68,329.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,711 : 110,004.10 = 49,513 : x
  2. Step 2: Convert to fraction form
    79,711/110,004.10 = 49,513/x
  3. Step 3: Cross multiply
    79,711x = 110,004.10 × 49,513
  4. Step 4: Simplify right side
    79,711x = 5,446,633,003.30
  5. Step 5: Solve for x
    x = 5,446,633,003.30/79,711
  6. Step 6: Final answer
    x = 68,329.75

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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.