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Finding the Fourth Proportional to 91,906.61, 126,863.70 and 55,609.92

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Solution

The fourth proportional to 91,906.61, 126,863.70 and 55,609.92 is: 76,761.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,906.61 : 126,863.70 = 55,609.92 : x
  2. Step 2: Convert to fraction form
    91,906.61/126,863.70 = 55,609.92/x
  3. Step 3: Cross multiply
    91,906.61x = 126,863.70 × 55,609.92
  4. Step 4: Simplify right side
    91,906.61x = 7,054,880,207.90
  5. Step 5: Solve for x
    x = 7,054,880,207.90/91,906.61
  6. Step 6: Final answer
    x = 76,761.41

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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.