Home / 79,821.21-110,145.48-49,189.54

Finding the Fourth Proportional to 79,821.21, 110,145.48 and 49,189.54

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Solution

The fourth proportional to 79,821.21, 110,145.48 and 49,189.54 is: 67,876.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,821.21 : 110,145.48 = 49,189.54 : x
  2. Step 2: Convert to fraction form
    79,821.21/110,145.48 = 49,189.54/x
  3. Step 3: Cross multiply
    79,821.21x = 110,145.48 × 49,189.54
  4. Step 4: Simplify right side
    79,821.21x = 5,418,005,494.28
  5. Step 5: Solve for x
    x = 5,418,005,494.28/79,821.21
  6. Step 6: Final answer
    x = 67,876.76

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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.