Home / 81,387,497.70-122,081,246.55-66,081,996.90

Finding the Fourth Proportional to 81,387,497.70, 122,081,246.55 and 66,081,996.90

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Solution

The fourth proportional to 81,387,497.70, 122,081,246.55 and 66,081,996.90 is: 99,122,995.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,387,497.70 : 122,081,246.55 = 66,081,996.90 : x
  2. Step 2: Convert to fraction form
    81,387,497.70/122,081,246.55 = 66,081,996.90/x
  3. Step 3: Cross multiply
    81,387,497.70x = 122,081,246.55 × 66,081,996.90
  4. Step 4: Simplify right side
    81,387,497.70x = 8,067,372,556,065,235
  5. Step 5: Solve for x
    x = 8,067,372,556,065,235/81,387,497.70
  6. Step 6: Final answer
    x = 99,122,995.35

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.