Home / 78,496,379.19-117,735,295.91-20,993,107.05

Finding the Fourth Proportional to 78,496,379.19, 117,735,295.91 and 20,993,107.05

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Solution

The fourth proportional to 78,496,379.19, 117,735,295.91 and 20,993,107.05 is: 31,487,180.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,496,379.19 : 117,735,295.91 = 20,993,107.05 : x
  2. Step 2: Convert to fraction form
    78,496,379.19/117,735,295.91 = 20,993,107.05/x
  3. Step 3: Cross multiply
    78,496,379.19x = 117,735,295.91 × 20,993,107.05
  4. Step 4: Simplify right side
    78,496,379.19x = 2,471,629,670,497,091.50
  5. Step 5: Solve for x
    x = 2,471,629,670,497,091.50/78,496,379.19
  6. Step 6: Final answer
    x = 31,487,180.63

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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.