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Finding the Fourth Proportional to 30,721,605.70, 46,082,408.55 and 19,412,191.30

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Solution

The fourth proportional to 30,721,605.70, 46,082,408.55 and 19,412,191.30 is: 29,118,286.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,721,605.70 : 46,082,408.55 = 19,412,191.30 : x
  2. Step 2: Convert to fraction form
    30,721,605.70/46,082,408.55 = 19,412,191.30/x
  3. Step 3: Cross multiply
    30,721,605.70x = 46,082,408.55 × 19,412,191.30
  4. Step 4: Simplify right side
    30,721,605.70x = 894,560,530,337,355.62
  5. Step 5: Solve for x
    x = 894,560,530,337,355.62/30,721,605.70
  6. Step 6: Final answer
    x = 29,118,286.95

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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.