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Finding the Fourth Proportional to 79,963,687.80, 119,945,530.80 and 19,379,413.80

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Solution

The fourth proportional to 79,963,687.80, 119,945,530.80 and 19,379,413.80 is: 29,069,120.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,963,687.80 : 119,945,530.80 = 19,379,413.80 : x
  2. Step 2: Convert to fraction form
    79,963,687.80/119,945,530.80 = 19,379,413.80/x
  3. Step 3: Cross multiply
    79,963,687.80x = 119,945,530.80 × 19,379,413.80
  4. Step 4: Simplify right side
    79,963,687.80x = 2,324,474,074,833,845
  5. Step 5: Solve for x
    x = 2,324,474,074,833,845/79,963,687.80
  6. Step 6: Final answer
    x = 29,069,120.48

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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.