Home / 81,545,661.54-122,175,003.24-76,690,949.22

Finding the Fourth Proportional to 81,545,661.54, 122,175,003.24 and 76,690,949.22

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Solution

The fourth proportional to 81,545,661.54, 122,175,003.24 and 76,690,949.22 is: 114,901,477.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,545,661.54 : 122,175,003.24 = 76,690,949.22 : x
  2. Step 2: Convert to fraction form
    81,545,661.54/122,175,003.24 = 76,690,949.22/x
  3. Step 3: Cross multiply
    81,545,661.54x = 122,175,003.24 × 76,690,949.22
  4. Step 4: Simplify right side
    81,545,661.54x = 9,369,716,969,432,174
  5. Step 5: Solve for x
    x = 9,369,716,969,432,174/81,545,661.54
  6. Step 6: Final answer
    x = 114,901,477.19

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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.