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Finding the Fourth Proportional to 79,867,768.80, 119,589,076.80 and 50,957,378.40

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Solution

The fourth proportional to 79,867,768.80, 119,589,076.80 and 50,957,378.40 is: 76,300,439.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,867,768.80 : 119,589,076.80 = 50,957,378.40 : x
  2. Step 2: Convert to fraction form
    79,867,768.80/119,589,076.80 = 50,957,378.40/x
  3. Step 3: Cross multiply
    79,867,768.80x = 119,589,076.80 × 50,957,378.40
  4. Step 4: Simplify right side
    79,867,768.80x = 6,093,945,839,004,261
  5. Step 5: Solve for x
    x = 6,093,945,839,004,261/79,867,768.80
  6. Step 6: Final answer
    x = 76,300,439.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.