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Finding the Fourth Proportional to 91,861.96, 126,771.06 and 51,025

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Solution

The fourth proportional to 91,861.96, 126,771.06 and 51,025 is: 70,415.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,861.96 : 126,771.06 = 51,025 : x
  2. Step 2: Convert to fraction form
    91,861.96/126,771.06 = 51,025/x
  3. Step 3: Cross multiply
    91,861.96x = 126,771.06 × 51,025
  4. Step 4: Simplify right side
    91,861.96x = 6,468,493,336.50
  5. Step 5: Solve for x
    x = 6,468,493,336.50/91,861.96
  6. Step 6: Final answer
    x = 70,415.36

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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.