Home / 67,143,791.84-100,715,682.11-18,621,644.78

Finding the Fourth Proportional to 67,143,791.84, 100,715,682.11 and 18,621,644.78

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Solution

The fourth proportional to 67,143,791.84, 100,715,682.11 and 18,621,644.78 is: 27,932,465.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,143,791.84 : 100,715,682.11 = 18,621,644.78 : x
  2. Step 2: Convert to fraction form
    67,143,791.84/100,715,682.11 = 18,621,644.78/x
  3. Step 3: Cross multiply
    67,143,791.84x = 100,715,682.11 × 18,621,644.78
  4. Step 4: Simplify right side
    67,143,791.84x = 1,875,491,656,186,501.75
  5. Step 5: Solve for x
    x = 1,875,491,656,186,501.75/67,143,791.84
  6. Step 6: Final answer
    x = 27,932,465.61

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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.