Home / 100,042,379.82-138,072,983.54-57,647,691.34

Finding the Fourth Proportional to 100,042,379.82, 138,072,983.54 and 57,647,691.34

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Solution

The fourth proportional to 100,042,379.82, 138,072,983.54 and 57,647,691.34 is: 79,562,169.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,042,379.82 : 138,072,983.54 = 57,647,691.34 : x
  2. Step 2: Convert to fraction form
    100,042,379.82/138,072,983.54 = 57,647,691.34/x
  3. Step 3: Cross multiply
    100,042,379.82x = 138,072,983.54 × 57,647,691.34
  4. Step 4: Simplify right side
    100,042,379.82x = 7,959,588,736,873,399
  5. Step 5: Solve for x
    x = 7,959,588,736,873,399/100,042,379.82
  6. Step 6: Final answer
    x = 79,562,169.06

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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.