Home / 57,806.85-86,717.22-20,359.18

Finding the Fourth Proportional to 57,806.85, 86,717.22 and 20,359.18

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Solution

The fourth proportional to 57,806.85, 86,717.22 and 20,359.18 is: 30,541.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,806.85 : 86,717.22 = 20,359.18 : x
  2. Step 2: Convert to fraction form
    57,806.85/86,717.22 = 20,359.18/x
  3. Step 3: Cross multiply
    57,806.85x = 86,717.22 × 20,359.18
  4. Step 4: Simplify right side
    57,806.85x = 1,765,491,491.08
  5. Step 5: Solve for x
    x = 1,765,491,491.08/57,806.85
  6. Step 6: Final answer
    x = 30,541.22

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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.