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Finding the Fourth Proportional to 91,161, 125,808.49 and 50,882.60

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Solution

The fourth proportional to 91,161, 125,808.49 and 50,882.60 is: 70,221.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,161 : 125,808.49 = 50,882.60 : x
  2. Step 2: Convert to fraction form
    91,161/125,808.49 = 50,882.60/x
  3. Step 3: Cross multiply
    91,161x = 125,808.49 × 50,882.60
  4. Step 4: Simplify right side
    91,161x = 6,401,463,073.27
  5. Step 5: Solve for x
    x = 6,401,463,073.27/91,161
  6. Step 6: Final answer
    x = 70,221.51

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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.