Home / 50,720,112.87-69,987,850.86-28,394,321.45

Finding the Fourth Proportional to 50,720,112.87, 69,987,850.86 and 28,394,321.45

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Solution

The fourth proportional to 50,720,112.87, 69,987,850.86 and 28,394,321.45 is: 39,180,857.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,720,112.87 : 69,987,850.86 = 28,394,321.45 : x
  2. Step 2: Convert to fraction form
    50,720,112.87/69,987,850.86 = 28,394,321.45/x
  3. Step 3: Cross multiply
    50,720,112.87x = 69,987,850.86 × 28,394,321.45
  4. Step 4: Simplify right side
    50,720,112.87x = 1,987,257,534,563,559.75
  5. Step 5: Solve for x
    x = 1,987,257,534,563,559.75/50,720,112.87
  6. Step 6: Final answer
    x = 39,180,857.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.