Home / 57,029.06-78,700.11-31,878.56

Finding the Fourth Proportional to 57,029.06, 78,700.11 and 31,878.56

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Solution

The fourth proportional to 57,029.06, 78,700.11 and 31,878.56 is: 43,992.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,029.06 : 78,700.11 = 31,878.56 : x
  2. Step 2: Convert to fraction form
    57,029.06/78,700.11 = 31,878.56/x
  3. Step 3: Cross multiply
    57,029.06x = 78,700.11 × 31,878.56
  4. Step 4: Simplify right side
    57,029.06x = 2,508,846,255.85
  5. Step 5: Solve for x
    x = 2,508,846,255.85/57,029.06
  6. Step 6: Final answer
    x = 43,992.42

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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.