Home / 81,129,199.20-111,958,393.30-43,959,450.12

Finding the Fourth Proportional to 81,129,199.20, 111,958,393.30 and 43,959,450.12

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Solution

The fourth proportional to 81,129,199.20, 111,958,393.30 and 43,959,450.12 is: 60,664,094.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,129,199.20 : 111,958,393.30 = 43,959,450.12 : x
  2. Step 2: Convert to fraction form
    81,129,199.20/111,958,393.30 = 43,959,450.12/x
  3. Step 3: Cross multiply
    81,129,199.20x = 111,958,393.30 × 43,959,450.12
  4. Step 4: Simplify right side
    81,129,199.20x = 4,921,629,405,786,692
  5. Step 5: Solve for x
    x = 4,921,629,405,786,692/81,129,199.20
  6. Step 6: Final answer
    x = 60,664,094.49

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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.