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Finding the Fourth Proportional to 91,022.62, 125,665.11 and 80,923.17

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Solution

The fourth proportional to 91,022.62, 125,665.11 and 80,923.17 is: 111,721.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,022.62 : 125,665.11 = 80,923.17 : x
  2. Step 2: Convert to fraction form
    91,022.62/125,665.11 = 80,923.17/x
  3. Step 3: Cross multiply
    91,022.62x = 125,665.11 × 80,923.17
  4. Step 4: Simplify right side
    91,022.62x = 10,169,219,059.60
  5. Step 5: Solve for x
    x = 10,169,219,059.60/91,022.62
  6. Step 6: Final answer
    x = 111,721.89

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1.5x scale

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.