Home / 57,857.28-86,792.76-20,409.54

Finding the Fourth Proportional to 57,857.28, 86,792.76 and 20,409.54

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Solution

The fourth proportional to 57,857.28, 86,792.76 and 20,409.54 is: 30,616.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,857.28 : 86,792.76 = 20,409.54 : x
  2. Step 2: Convert to fraction form
    57,857.28/86,792.76 = 20,409.54/x
  3. Step 3: Cross multiply
    57,857.28x = 86,792.76 × 20,409.54
  4. Step 4: Simplify right side
    57,857.28x = 1,771,400,306.93
  5. Step 5: Solve for x
    x = 1,771,400,306.93/57,857.28
  6. Step 6: Final answer
    x = 30,616.72

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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.