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Finding the Fourth Proportional to 72,183,905.80, 108,275,858.70 and 55,177,793.80

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Solution

The fourth proportional to 72,183,905.80, 108,275,858.70 and 55,177,793.80 is: 82,766,690.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,183,905.80 : 108,275,858.70 = 55,177,793.80 : x
  2. Step 2: Convert to fraction form
    72,183,905.80/108,275,858.70 = 55,177,793.80/x
  3. Step 3: Cross multiply
    72,183,905.80x = 108,275,858.70 × 55,177,793.80
  4. Step 4: Simplify right side
    72,183,905.80x = 5,974,423,004,866,536
  5. Step 5: Solve for x
    x = 5,974,423,004,866,536/72,183,905.80
  6. Step 6: Final answer
    x = 82,766,690.70

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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.