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Finding the Fourth Proportional to 80,953.89, 111,716.37 and 47,419.89

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Solution

The fourth proportional to 80,953.89, 111,716.37 and 47,419.89 is: 65,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,953.89 : 111,716.37 = 47,419.89 : x
  2. Step 2: Convert to fraction form
    80,953.89/111,716.37 = 47,419.89/x
  3. Step 3: Cross multiply
    80,953.89x = 111,716.37 × 47,419.89
  4. Step 4: Simplify right side
    80,953.89x = 5,297,577,976.60
  5. Step 5: Solve for x
    x = 5,297,577,976.60/80,953.89
  6. Step 6: Final answer
    x = 65,439.45

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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.