Home / 57,076.36-78,761.10-31,921

Finding the Fourth Proportional to 57,076.36, 78,761.10 and 31,921

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Solution

The fourth proportional to 57,076.36, 78,761.10 and 31,921 is: 44,048.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,076.36 : 78,761.10 = 31,921 : x
  2. Step 2: Convert to fraction form
    57,076.36/78,761.10 = 31,921/x
  3. Step 3: Cross multiply
    57,076.36x = 78,761.10 × 31,921
  4. Step 4: Simplify right side
    57,076.36x = 2,514,133,073.10
  5. Step 5: Solve for x
    x = 2,514,133,073.10/57,076.36
  6. Step 6: Final answer
    x = 44,048.59

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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.