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Finding the Fourth Proportional to 60,857.80, 91,286.70 and 50,489.80

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Solution

The fourth proportional to 60,857.80, 91,286.70 and 50,489.80 is: 75,734.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,857.80 : 91,286.70 = 50,489.80 : x
  2. Step 2: Convert to fraction form
    60,857.80/91,286.70 = 50,489.80/x
  3. Step 3: Cross multiply
    60,857.80x = 91,286.70 × 50,489.80
  4. Step 4: Simplify right side
    60,857.80x = 4,609,047,225.66
  5. Step 5: Solve for x
    x = 4,609,047,225.66/60,857.80
  6. Step 6: Final answer
    x = 75,734.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.