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Finding the Fourth Proportional to 73,419.90, 110,134.04 and 20,825.25

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Solution

The fourth proportional to 73,419.90, 110,134.04 and 20,825.25 is: 31,239.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,419.90 : 110,134.04 = 20,825.25 : x
  2. Step 2: Convert to fraction form
    73,419.90/110,134.04 = 20,825.25/x
  3. Step 3: Cross multiply
    73,419.90x = 110,134.04 × 20,825.25
  4. Step 4: Simplify right side
    73,419.90x = 2,293,568,812.38
  5. Step 5: Solve for x
    x = 2,293,568,812.38/73,419.90
  6. Step 6: Final answer
    x = 31,239.06

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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.