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Finding the Fourth Proportional to 72,188.51, 108,299.16 and 27,223.79

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Solution

The fourth proportional to 72,188.51, 108,299.16 and 27,223.79 is: 40,841.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,188.51 : 108,299.16 = 27,223.79 : x
  2. Step 2: Convert to fraction form
    72,188.51/108,299.16 = 27,223.79/x
  3. Step 3: Cross multiply
    72,188.51x = 108,299.16 × 27,223.79
  4. Step 4: Simplify right side
    72,188.51x = 2,948,313,047.52
  5. Step 5: Solve for x
    x = 2,948,313,047.52/72,188.51
  6. Step 6: Final answer
    x = 40,841.86

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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.