Home / 56,921.77-78,554.67-31,431.73

Finding the Fourth Proportional to 56,921.77, 78,554.67 and 31,431.73

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Solution

The fourth proportional to 56,921.77, 78,554.67 and 31,431.73 is: 43,377.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,921.77 : 78,554.67 = 31,431.73 : x
  2. Step 2: Convert to fraction form
    56,921.77/78,554.67 = 31,431.73/x
  3. Step 3: Cross multiply
    56,921.77x = 78,554.67 × 31,431.73
  4. Step 4: Simplify right side
    56,921.77x = 2,469,109,177.68
  5. Step 5: Solve for x
    x = 2,469,109,177.68/56,921.77
  6. Step 6: Final answer
    x = 43,377.24

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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.