Home / 51,780.97-71,481.80-39,039.31

Finding the Fourth Proportional to 51,780.97, 71,481.80 and 39,039.31

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Solution

The fourth proportional to 51,780.97, 71,481.80 and 39,039.31 is: 53,892.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,780.97 : 71,481.80 = 39,039.31 : x
  2. Step 2: Convert to fraction form
    51,780.97/71,481.80 = 39,039.31/x
  3. Step 3: Cross multiply
    51,780.97x = 71,481.80 × 39,039.31
  4. Step 4: Simplify right side
    51,780.97x = 2,790,600,149.56
  5. Step 5: Solve for x
    x = 2,790,600,149.56/51,780.97
  6. Step 6: Final answer
    x = 53,892.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.