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Finding the Fourth Proportional to 79,885,418.80, 119,828,128.20 and 41,143,369.90

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Solution

The fourth proportional to 79,885,418.80, 119,828,128.20 and 41,143,369.90 is: 61,715,054.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,885,418.80 : 119,828,128.20 = 41,143,369.90 : x
  2. Step 2: Convert to fraction form
    79,885,418.80/119,828,128.20 = 41,143,369.90/x
  3. Step 3: Cross multiply
    79,885,418.80x = 119,828,128.20 × 41,143,369.90
  4. Step 4: Simplify right side
    79,885,418.80x = 4,930,133,002,957,221
  5. Step 5: Solve for x
    x = 4,930,133,002,957,221/79,885,418.80
  6. Step 6: Final answer
    x = 61,715,054.85

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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.