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Finding the Fourth Proportional to 85,901.80, 118,540.48 and 47,660.94

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Solution

The fourth proportional to 85,901.80, 118,540.48 and 47,660.94 is: 65,769.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,901.80 : 118,540.48 = 47,660.94 : x
  2. Step 2: Convert to fraction form
    85,901.80/118,540.48 = 47,660.94/x
  3. Step 3: Cross multiply
    85,901.80x = 118,540.48 × 47,660.94
  4. Step 4: Simplify right side
    85,901.80x = 5,649,750,704.85
  5. Step 5: Solve for x
    x = 5,649,750,704.85/85,901.80
  6. Step 6: Final answer
    x = 65,769.88

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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.