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Finding the Fourth Proportional to 53,806.33, 80,709.90 and 18,745.93

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Solution

The fourth proportional to 53,806.33, 80,709.90 and 18,745.93 is: 28,119.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,806.33 : 80,709.90 = 18,745.93 : x
  2. Step 2: Convert to fraction form
    53,806.33/80,709.90 = 18,745.93/x
  3. Step 3: Cross multiply
    53,806.33x = 80,709.90 × 18,745.93
  4. Step 4: Simplify right side
    53,806.33x = 1,512,982,135.71
  5. Step 5: Solve for x
    x = 1,512,982,135.71/53,806.33
  6. Step 6: Final answer
    x = 28,119.04

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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.