Home / 53,682.13-80,512.06-20,390.52

Finding the Fourth Proportional to 53,682.13, 80,512.06 and 20,390.52

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Solution

The fourth proportional to 53,682.13, 80,512.06 and 20,390.52 is: 30,581.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,682.13 : 80,512.06 = 20,390.52 : x
  2. Step 2: Convert to fraction form
    53,682.13/80,512.06 = 20,390.52/x
  3. Step 3: Cross multiply
    53,682.13x = 80,512.06 × 20,390.52
  4. Step 4: Simplify right side
    53,682.13x = 1,641,682,769.67
  5. Step 5: Solve for x
    x = 1,641,682,769.67/53,682.13
  6. Step 6: Final answer
    x = 30,581.55

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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.