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Finding the Fourth Proportional to 100,555.20, 150,865.61 and 47,957.85

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Solution

The fourth proportional to 100,555.20, 150,865.61 and 47,957.85 is: 71,952.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,555.20 : 150,865.61 = 47,957.85 : x
  2. Step 2: Convert to fraction form
    100,555.20/150,865.61 = 47,957.85/x
  3. Step 3: Cross multiply
    100,555.20x = 150,865.61 × 47,957.85
  4. Step 4: Simplify right side
    100,555.20x = 7,235,190,054.75
  5. Step 5: Solve for x
    x = 7,235,190,054.75/100,555.20
  6. Step 6: Final answer
    x = 71,952.42

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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.