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Finding the Fourth Proportional to 91,245.75, 125,910.12 and 50,958.63

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Solution

The fourth proportional to 91,245.75, 125,910.12 and 50,958.63 is: 70,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,245.75 : 125,910.12 = 50,958.63 : x
  2. Step 2: Convert to fraction form
    91,245.75/125,910.12 = 50,958.63/x
  3. Step 3: Cross multiply
    91,245.75x = 125,910.12 × 50,958.63
  4. Step 4: Simplify right side
    91,245.75x = 6,416,207,218.34
  5. Step 5: Solve for x
    x = 6,416,207,218.34/91,245.75
  6. Step 6: Final answer
    x = 70,317.87

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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.