Home / 57,012.54-78,676.78-31,519.56

Finding the Fourth Proportional to 57,012.54, 78,676.78 and 31,519.56

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Solution

The fourth proportional to 57,012.54, 78,676.78 and 31,519.56 is: 43,496.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,012.54 : 78,676.78 = 31,519.56 : x
  2. Step 2: Convert to fraction form
    57,012.54/78,676.78 = 31,519.56/x
  3. Step 3: Cross multiply
    57,012.54x = 78,676.78 × 31,519.56
  4. Step 4: Simplify right side
    57,012.54x = 2,479,857,487.82
  5. Step 5: Solve for x
    x = 2,479,857,487.82/57,012.54
  6. Step 6: Final answer
    x = 43,496.70

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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.