Home / 91,249.88-136,896.75-28,920.38

Finding the Fourth Proportional to 91,249.88, 136,896.75 and 28,920.38

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Solution

The fourth proportional to 91,249.88, 136,896.75 and 28,920.38 is: 43,387.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,249.88 : 136,896.75 = 28,920.38 : x
  2. Step 2: Convert to fraction form
    91,249.88/136,896.75 = 28,920.38/x
  3. Step 3: Cross multiply
    91,249.88x = 136,896.75 × 28,920.38
  4. Step 4: Simplify right side
    91,249.88x = 3,959,105,346.28
  5. Step 5: Solve for x
    x = 3,959,105,346.28/91,249.88
  6. Step 6: Final answer
    x = 43,387.52

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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.