Home / 53,939.43-80,909.82-20,661.49

Finding the Fourth Proportional to 53,939.43, 80,909.82 and 20,661.49

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Solution

The fourth proportional to 53,939.43, 80,909.82 and 20,661.49 is: 30,992.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,939.43 : 80,909.82 = 20,661.49 : x
  2. Step 2: Convert to fraction form
    53,939.43/80,909.82 = 20,661.49/x
  3. Step 3: Cross multiply
    53,939.43x = 80,909.82 × 20,661.49
  4. Step 4: Simplify right side
    53,939.43x = 1,671,717,537.97
  5. Step 5: Solve for x
    x = 1,671,717,537.97/53,939.43
  6. Step 6: Final answer
    x = 30,992.50

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1.5x scale

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.