Home / 81,545,729.22-122,175,104.49-76,691,016.90

Finding the Fourth Proportional to 81,545,729.22, 122,175,104.49 and 76,691,016.90

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Solution

The fourth proportional to 81,545,729.22, 122,175,104.49 and 76,691,016.90 is: 114,901,578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,545,729.22 : 122,175,104.49 = 76,691,016.90 : x
  2. Step 2: Convert to fraction form
    81,545,729.22/122,175,104.49 = 76,691,016.90/x
  3. Step 3: Cross multiply
    81,545,729.22x = 122,175,104.49 × 76,691,016.90
  4. Step 4: Simplify right side
    81,545,729.22x = 9,369,733,003,201,856
  5. Step 5: Solve for x
    x = 9,369,733,003,201,856/81,545,729.22
  6. Step 6: Final answer
    x = 114,901,578.45

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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.