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Finding the Fourth Proportional to 79,885,431.80, 119,828,147.70 and 41,143,382.90

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Solution

The fourth proportional to 79,885,431.80, 119,828,147.70 and 41,143,382.90 is: 61,715,074.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,885,431.80 : 119,828,147.70 = 41,143,382.90 : x
  2. Step 2: Convert to fraction form
    79,885,431.80/119,828,147.70 = 41,143,382.90/x
  3. Step 3: Cross multiply
    79,885,431.80x = 119,828,147.70 × 41,143,382.90
  4. Step 4: Simplify right side
    79,885,431.80x = 4,930,135,363,018,854
  5. Step 5: Solve for x
    x = 4,930,135,363,018,854/79,885,431.80
  6. Step 6: Final answer
    x = 61,715,074.35

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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.