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Finding the Fourth Proportional to 30,108.56, 45,174.72 and 21,799.04

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Solution

The fourth proportional to 30,108.56, 45,174.72 and 21,799.04 is: 32,707.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,108.56 : 45,174.72 = 21,799.04 : x
  2. Step 2: Convert to fraction form
    30,108.56/45,174.72 = 21,799.04/x
  3. Step 3: Cross multiply
    30,108.56x = 45,174.72 × 21,799.04
  4. Step 4: Simplify right side
    30,108.56x = 984,765,528.27
  5. Step 5: Solve for x
    x = 984,765,528.27/30,108.56
  6. Step 6: Final answer
    x = 32,707.16

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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.