Home / 72,253,007.97-99,709,896.12-39,213,542.43

Finding the Fourth Proportional to 72,253,007.97, 99,709,896.12 and 39,213,542.43

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Solution

The fourth proportional to 72,253,007.97, 99,709,896.12 and 39,213,542.43 is: 54,115,092.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,253,007.97 : 99,709,896.12 = 39,213,542.43 : x
  2. Step 2: Convert to fraction form
    72,253,007.97/99,709,896.12 = 39,213,542.43/x
  3. Step 3: Cross multiply
    72,253,007.97x = 99,709,896.12 × 39,213,542.43
  4. Step 4: Simplify right side
    72,253,007.97x = 3,909,978,242,546,422
  5. Step 5: Solve for x
    x = 3,909,978,242,546,422/72,253,007.97
  6. Step 6: Final answer
    x = 54,115,092.96

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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.