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Finding the Fourth Proportional to 91,989.25, 126,945.29 and 52,245.25

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Solution

The fourth proportional to 91,989.25, 126,945.29 and 52,245.25 is: 72,098.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,989.25 : 126,945.29 = 52,245.25 : x
  2. Step 2: Convert to fraction form
    91,989.25/126,945.29 = 52,245.25/x
  3. Step 3: Cross multiply
    91,989.25x = 126,945.29 × 52,245.25
  4. Step 4: Simplify right side
    91,989.25x = 6,632,288,412.37
  5. Step 5: Solve for x
    x = 6,632,288,412.37/91,989.25
  6. Step 6: Final answer
    x = 72,098.52

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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.