Home / 79,987.20-110,394.60-49,378.12

Finding the Fourth Proportional to 79,987.20, 110,394.60 and 49,378.12

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Solution

The fourth proportional to 79,987.20, 110,394.60 and 49,378.12 is: 68,149.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,987.20 : 110,394.60 = 49,378.12 : x
  2. Step 2: Convert to fraction form
    79,987.20/110,394.60 = 49,378.12/x
  3. Step 3: Cross multiply
    79,987.20x = 110,394.60 × 49,378.12
  4. Step 4: Simplify right side
    79,987.20x = 5,451,077,806.15
  5. Step 5: Solve for x
    x = 5,451,077,806.15/79,987.20
  6. Step 6: Final answer
    x = 68,149.38

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1.5x scale

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.