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Finding the Fourth Proportional to 91,241.43, 125,911.91 and 53,022.57

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Solution

The fourth proportional to 91,241.43, 125,911.91 and 53,022.57 is: 73,170.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,241.43 : 125,911.91 = 53,022.57 : x
  2. Step 2: Convert to fraction form
    91,241.43/125,911.91 = 53,022.57/x
  3. Step 3: Cross multiply
    91,241.43x = 125,911.91 × 53,022.57
  4. Step 4: Simplify right side
    91,241.43x = 6,676,172,796.70
  5. Step 5: Solve for x
    x = 6,676,172,796.70/91,241.43
  6. Step 6: Final answer
    x = 73,170.41

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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.