Home / 57,076.86-78,761.79-31,921.50

Finding the Fourth Proportional to 57,076.86, 78,761.79 and 31,921.50

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Solution

The fourth proportional to 57,076.86, 78,761.79 and 31,921.50 is: 44,049.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,076.86 : 78,761.79 = 31,921.50 : x
  2. Step 2: Convert to fraction form
    57,076.86/78,761.79 = 31,921.50/x
  3. Step 3: Cross multiply
    57,076.86x = 78,761.79 × 31,921.50
  4. Step 4: Simplify right side
    57,076.86x = 2,514,194,479.49
  5. Step 5: Solve for x
    x = 2,514,194,479.49/57,076.86
  6. Step 6: Final answer
    x = 44,049.28

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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.