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Finding the Fourth Proportional to 72,191.43, 108,299.48 and 22,270.59

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Solution

The fourth proportional to 72,191.43, 108,299.48 and 22,270.59 is: 33,409.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,191.43 : 108,299.48 = 22,270.59 : x
  2. Step 2: Convert to fraction form
    72,191.43/108,299.48 = 22,270.59/x
  3. Step 3: Cross multiply
    72,191.43x = 108,299.48 × 22,270.59
  4. Step 4: Simplify right side
    72,191.43x = 2,411,893,204.94
  5. Step 5: Solve for x
    x = 2,411,893,204.94/72,191.43
  6. Step 6: Final answer
    x = 33,409.69

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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.