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Finding the Fourth Proportional to 72,141.27, 108,211.87 and 19,550.75

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Solution

The fourth proportional to 72,141.27, 108,211.87 and 19,550.75 is: 29,326.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,141.27 : 108,211.87 = 19,550.75 : x
  2. Step 2: Convert to fraction form
    72,141.27/108,211.87 = 19,550.75/x
  3. Step 3: Cross multiply
    72,141.27x = 108,211.87 × 19,550.75
  4. Step 4: Simplify right side
    72,141.27x = 2,115,623,217.40
  5. Step 5: Solve for x
    x = 2,115,623,217.40/72,141.27
  6. Step 6: Final answer
    x = 29,326.12

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1.5x scale

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.