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Finding the Fourth Proportional to 64,469,836.80, 96,704,755.20 and 38,641,804.20

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Solution

The fourth proportional to 64,469,836.80, 96,704,755.20 and 38,641,804.20 is: 57,962,706.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,469,836.80 : 96,704,755.20 = 38,641,804.20 : x
  2. Step 2: Convert to fraction form
    64,469,836.80/96,704,755.20 = 38,641,804.20/x
  3. Step 3: Cross multiply
    64,469,836.80x = 96,704,755.20 × 38,641,804.20
  4. Step 4: Simplify right side
    64,469,836.80x = 3,736,846,215,647,332
  5. Step 5: Solve for x
    x = 3,736,846,215,647,332/64,469,836.80
  6. Step 6: Final answer
    x = 57,962,706.30

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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.