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Finding the Fourth Proportional to 57,825.81, 86,738.72 and 18,375.57

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Solution

The fourth proportional to 57,825.81, 86,738.72 and 18,375.57 is: 27,563.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,825.81 : 86,738.72 = 18,375.57 : x
  2. Step 2: Convert to fraction form
    57,825.81/86,738.72 = 18,375.57/x
  3. Step 3: Cross multiply
    57,825.81x = 86,738.72 × 18,375.57
  4. Step 4: Simplify right side
    57,825.81x = 1,593,873,329.19
  5. Step 5: Solve for x
    x = 1,593,873,329.19/57,825.81
  6. Step 6: Final answer
    x = 27,563.36

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1.5x scale

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.