Home / 81,129,197.68-111,958,391.22-43,959,448.64

Finding the Fourth Proportional to 81,129,197.68, 111,958,391.22 and 43,959,448.64

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Solution

The fourth proportional to 81,129,197.68, 111,958,391.22 and 43,959,448.64 is: 60,664,092.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,129,197.68 : 111,958,391.22 = 43,959,448.64 : x
  2. Step 2: Convert to fraction form
    81,129,197.68/111,958,391.22 = 43,959,448.64/x
  3. Step 3: Cross multiply
    81,129,197.68x = 111,958,391.22 × 43,959,448.64
  4. Step 4: Simplify right side
    81,129,197.68x = 4,921,629,148,652,617
  5. Step 5: Solve for x
    x = 4,921,629,148,652,617/81,129,197.68
  6. Step 6: Final answer
    x = 60,664,092.45

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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.