Home / 80,538,149.21-111,139,517.63-49,228,621.18

Finding the Fourth Proportional to 80,538,149.21, 111,139,517.63 and 49,228,621.18

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Solution

The fourth proportional to 80,538,149.21, 111,139,517.63 and 49,228,621.18 is: 67,933,585.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,538,149.21 : 111,139,517.63 = 49,228,621.18 : x
  2. Step 2: Convert to fraction form
    80,538,149.21/111,139,517.63 = 49,228,621.18/x
  3. Step 3: Cross multiply
    80,538,149.21x = 111,139,517.63 × 49,228,621.18
  4. Step 4: Simplify right side
    80,538,149.21x = 5,471,245,210,733,360
  5. Step 5: Solve for x
    x = 5,471,245,210,733,360/80,538,149.21
  6. Step 6: Final answer
    x = 67,933,585.07

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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.