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Finding the Fourth Proportional to 91,251.69, 125,914.88 and 50,960.31

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Solution

The fourth proportional to 91,251.69, 125,914.88 and 50,960.31 is: 70,318.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,251.69 : 125,914.88 = 50,960.31 : x
  2. Step 2: Convert to fraction form
    91,251.69/125,914.88 = 50,960.31/x
  3. Step 3: Cross multiply
    91,251.69x = 125,914.88 × 50,960.31
  4. Step 4: Simplify right side
    91,251.69x = 6,416,661,892.71
  5. Step 5: Solve for x
    x = 6,416,661,892.71/91,251.69
  6. Step 6: Final answer
    x = 70,318.28

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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.