Home / 81,129,204.20-111,958,400.20-43,959,455.12

Finding the Fourth Proportional to 81,129,204.20, 111,958,400.20 and 43,959,455.12

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Solution

The fourth proportional to 81,129,204.20, 111,958,400.20 and 43,959,455.12 is: 60,664,101.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,129,204.20 : 111,958,400.20 = 43,959,455.12 : x
  2. Step 2: Convert to fraction form
    81,129,204.20/111,958,400.20 = 43,959,455.12/x
  3. Step 3: Cross multiply
    81,129,204.20x = 111,958,400.20 × 43,959,455.12
  4. Step 4: Simplify right side
    81,129,204.20x = 4,921,630,268,898,899
  5. Step 5: Solve for x
    x = 4,921,630,268,898,899/81,129,204.20
  6. Step 6: Final answer
    x = 60,664,101.39

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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.