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Finding the Fourth Proportional to 91,863, 126,771 and 52,119

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Solution

The fourth proportional to 91,863, 126,771 and 52,119 is: 71,924.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,863 : 126,771 = 52,119 : x
  2. Step 2: Convert to fraction form
    91,863/126,771 = 52,119/x
  3. Step 3: Cross multiply
    91,863x = 126,771 × 52,119
  4. Step 4: Simplify right side
    91,863x = 6,607,177,749
  5. Step 5: Solve for x
    x = 6,607,177,749/91,863
  6. Step 6: Final answer
    x = 71,924.25

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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.