Home / 81,129,186.15-111,958,375.28-43,959,437.04

Finding the Fourth Proportional to 81,129,186.15, 111,958,375.28 and 43,959,437.04

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Solution

The fourth proportional to 81,129,186.15, 111,958,375.28 and 43,959,437.04 is: 60,664,076.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,129,186.15 : 111,958,375.28 = 43,959,437.04 : x
  2. Step 2: Convert to fraction form
    81,129,186.15/111,958,375.28 = 43,959,437.04/x
  3. Step 3: Cross multiply
    81,129,186.15x = 111,958,375.28 × 43,959,437.04
  4. Step 4: Simplify right side
    81,129,186.15x = 4,921,627,149,002,055
  5. Step 5: Solve for x
    x = 4,921,627,149,002,055/81,129,186.15
  6. Step 6: Final answer
    x = 60,664,076.43

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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.