Home / 78,169.09-107,816.38-49,493.42

Finding the Fourth Proportional to 78,169.09, 107,816.38 and 49,493.42

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Solution

The fourth proportional to 78,169.09, 107,816.38 and 49,493.42 is: 68,264.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,169.09 : 107,816.38 = 49,493.42 : x
  2. Step 2: Convert to fraction form
    78,169.09/107,816.38 = 49,493.42/x
  3. Step 3: Cross multiply
    78,169.09x = 107,816.38 × 49,493.42
  4. Step 4: Simplify right side
    78,169.09x = 5,336,201,378.22
  5. Step 5: Solve for x
    x = 5,336,201,378.22/78,169.09
  6. Step 6: Final answer
    x = 68,264.85

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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.