Home / 81,129,191.93-111,958,383.29-43,959,442.88

Finding the Fourth Proportional to 81,129,191.93, 111,958,383.29 and 43,959,442.88

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Solution

The fourth proportional to 81,129,191.93, 111,958,383.29 and 43,959,442.88 is: 60,664,084.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,129,191.93 : 111,958,383.29 = 43,959,442.88 : x
  2. Step 2: Convert to fraction form
    81,129,191.93/111,958,383.29 = 43,959,442.88/x
  3. Step 3: Cross multiply
    81,129,191.93x = 111,958,383.29 × 43,959,442.88
  4. Step 4: Simplify right side
    81,129,191.93x = 4,921,628,154,394,312
  5. Step 5: Solve for x
    x = 4,921,628,154,394,312/81,129,191.93
  6. Step 6: Final answer
    x = 60,664,084.50

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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.