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Finding the Fourth Proportional to 34,704,976.80, 52,022,035.80 and 20,320,640.40

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Solution

The fourth proportional to 34,704,976.80, 52,022,035.80 and 20,320,640.40 is: 30,460,215.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,704,976.80 : 52,022,035.80 = 20,320,640.40 : x
  2. Step 2: Convert to fraction form
    34,704,976.80/52,022,035.80 = 20,320,640.40/x
  3. Step 3: Cross multiply
    34,704,976.80x = 52,022,035.80 × 20,320,640.40
  4. Step 4: Simplify right side
    34,704,976.80x = 1,057,121,082,367,726.12
  5. Step 5: Solve for x
    x = 1,057,121,082,367,726.12/34,704,976.80
  6. Step 6: Final answer
    x = 30,460,215.79

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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.