Home / 57,085.44-78,780.96-31,930.56

Finding the Fourth Proportional to 57,085.44, 78,780.96 and 31,930.56

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Solution

The fourth proportional to 57,085.44, 78,780.96 and 31,930.56 is: 44,065.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,085.44 : 78,780.96 = 31,930.56 : x
  2. Step 2: Convert to fraction form
    57,085.44/78,780.96 = 31,930.56/x
  3. Step 3: Cross multiply
    57,085.44x = 78,780.96 × 31,930.56
  4. Step 4: Simplify right side
    57,085.44x = 2,515,520,170.14
  5. Step 5: Solve for x
    x = 2,515,520,170.14/57,085.44
  6. Step 6: Final answer
    x = 44,065.88

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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.