Home / 91,138.09-125,771.68-52,906.50

Finding the Fourth Proportional to 91,138.09, 125,771.68 and 52,906.50

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Solution

The fourth proportional to 91,138.09, 125,771.68 and 52,906.50 is: 73,011.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,138.09 : 125,771.68 = 52,906.50 : x
  2. Step 2: Convert to fraction form
    91,138.09/125,771.68 = 52,906.50/x
  3. Step 3: Cross multiply
    91,138.09x = 125,771.68 × 52,906.50
  4. Step 4: Simplify right side
    91,138.09x = 6,654,138,808.96
  5. Step 5: Solve for x
    x = 6,654,138,808.96/91,138.09
  6. Step 6: Final answer
    x = 73,011.61

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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.