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Finding the Fourth Proportional to 57,513.87, 86,270.81 and 18,074.43

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Solution

The fourth proportional to 57,513.87, 86,270.81 and 18,074.43 is: 27,111.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,513.87 : 86,270.81 = 18,074.43 : x
  2. Step 2: Convert to fraction form
    57,513.87/86,270.81 = 18,074.43/x
  3. Step 3: Cross multiply
    57,513.87x = 86,270.81 × 18,074.43
  4. Step 4: Simplify right side
    57,513.87x = 1,559,295,626.02
  5. Step 5: Solve for x
    x = 1,559,295,626.02/57,513.87
  6. Step 6: Final answer
    x = 27,111.65

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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.