Home / 53,879.90-80,736.02-20,581.80

Finding the Fourth Proportional to 53,879.90, 80,736.02 and 20,581.80

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Solution

The fourth proportional to 53,879.90, 80,736.02 and 20,581.80 is: 30,840.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,879.90 : 80,736.02 = 20,581.80 : x
  2. Step 2: Convert to fraction form
    53,879.90/80,736.02 = 20,581.80/x
  3. Step 3: Cross multiply
    53,879.90x = 80,736.02 × 20,581.80
  4. Step 4: Simplify right side
    53,879.90x = 1,661,692,616.44
  5. Step 5: Solve for x
    x = 1,661,692,616.44/53,879.90
  6. Step 6: Final answer
    x = 30,840.68

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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.