Home / 91,021.62-125,663.73-80,922.17

Finding the Fourth Proportional to 91,021.62, 125,663.73 and 80,922.17

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Solution

The fourth proportional to 91,021.62, 125,663.73 and 80,922.17 is: 111,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,021.62 : 125,663.73 = 80,922.17 : x
  2. Step 2: Convert to fraction form
    91,021.62/125,663.73 = 80,922.17/x
  3. Step 3: Cross multiply
    91,021.62x = 125,663.73 × 80,922.17
  4. Step 4: Simplify right side
    91,021.62x = 10,168,981,003.12
  5. Step 5: Solve for x
    x = 10,168,981,003.12/91,021.62
  6. Step 6: Final answer
    x = 111,720.50

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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.