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Finding the Fourth Proportional to 72,809.20, 109,213.72 and 22,893.65

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Solution

The fourth proportional to 72,809.20, 109,213.72 and 22,893.65 is: 34,340.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,809.20 : 109,213.72 = 22,893.65 : x
  2. Step 2: Convert to fraction form
    72,809.20/109,213.72 = 22,893.65/x
  3. Step 3: Cross multiply
    72,809.20x = 109,213.72 × 22,893.65
  4. Step 4: Simplify right side
    72,809.20x = 2,500,300,896.68
  5. Step 5: Solve for x
    x = 2,500,300,896.68/72,809.20
  6. Step 6: Final answer
    x = 34,340.45

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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.