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Finding the Fourth Proportional to 68,359,743.80, 102,586,854.90 and 49,206,872.60

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Solution

The fourth proportional to 68,359,743.80, 102,586,854.90 and 49,206,872.60 is: 73,844,312.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,359,743.80 : 102,586,854.90 = 49,206,872.60 : x
  2. Step 2: Convert to fraction form
    68,359,743.80/102,586,854.90 = 49,206,872.60/x
  3. Step 3: Cross multiply
    68,359,743.80x = 102,586,854.90 × 49,206,872.60
  4. Step 4: Simplify right side
    68,359,743.80x = 5,047,978,299,498,986
  5. Step 5: Solve for x
    x = 5,047,978,299,498,986/68,359,743.80
  6. Step 6: Final answer
    x = 73,844,312.73

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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.