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Finding the Fourth Proportional to 91,102.97, 125,722.02 and 50,816.72

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Solution

The fourth proportional to 91,102.97, 125,722.02 and 50,816.72 is: 70,127.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,102.97 : 125,722.02 = 50,816.72 : x
  2. Step 2: Convert to fraction form
    91,102.97/125,722.02 = 50,816.72/x
  3. Step 3: Cross multiply
    91,102.97x = 125,722.02 × 50,816.72
  4. Step 4: Simplify right side
    91,102.97x = 6,388,780,485.86
  5. Step 5: Solve for x
    x = 6,388,780,485.86/91,102.97
  6. Step 6: Final answer
    x = 70,127.03

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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.