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Finding the Fourth Proportional to 67,671.23, 101,522.93 and 20,290.28

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Solution

The fourth proportional to 67,671.23, 101,522.93 and 20,290.28 is: 30,440.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,671.23 : 101,522.93 = 20,290.28 : x
  2. Step 2: Convert to fraction form
    67,671.23/101,522.93 = 20,290.28/x
  3. Step 3: Cross multiply
    67,671.23x = 101,522.93 × 20,290.28
  4. Step 4: Simplify right side
    67,671.23x = 2,059,928,067.05
  5. Step 5: Solve for x
    x = 2,059,928,067.05/67,671.23
  6. Step 6: Final answer
    x = 30,440.24

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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.