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Finding the Fourth Proportional to 72,330, 108,490.68 and 22,410.24

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Solution

The fourth proportional to 72,330, 108,490.68 and 22,410.24 is: 33,614.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,330 : 108,490.68 = 22,410.24 : x
  2. Step 2: Convert to fraction form
    72,330/108,490.68 = 22,410.24/x
  3. Step 3: Cross multiply
    72,330x = 108,490.68 × 22,410.24
  4. Step 4: Simplify right side
    72,330x = 2,431,302,176.56
  5. Step 5: Solve for x
    x = 2,431,302,176.56/72,330
  6. Step 6: Final answer
    x = 33,614.02

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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.