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Finding the Fourth Proportional to 91,265.31, 125,951.04 and 50,979.96

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Solution

The fourth proportional to 91,265.31, 125,951.04 and 50,979.96 is: 70,355.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,265.31 : 125,951.04 = 50,979.96 : x
  2. Step 2: Convert to fraction form
    91,265.31/125,951.04 = 50,979.96/x
  3. Step 3: Cross multiply
    91,265.31x = 125,951.04 × 50,979.96
  4. Step 4: Simplify right side
    91,265.31x = 6,420,978,981.16
  5. Step 5: Solve for x
    x = 6,420,978,981.16/91,265.31
  6. Step 6: Final answer
    x = 70,355.09

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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.