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Finding the Fourth Proportional to 57,603.43, 86,396.95 and 18,155.42

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Solution

The fourth proportional to 57,603.43, 86,396.95 and 18,155.42 is: 27,230.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,603.43 : 86,396.95 = 18,155.42 : x
  2. Step 2: Convert to fraction form
    57,603.43/86,396.95 = 18,155.42/x
  3. Step 3: Cross multiply
    57,603.43x = 86,396.95 × 18,155.42
  4. Step 4: Simplify right side
    57,603.43x = 1,568,572,868.58
  5. Step 5: Solve for x
    x = 1,568,572,868.58/57,603.43
  6. Step 6: Final answer
    x = 27,230.55

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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.