Home / 57,431.96-79,256.36-31,940.64

Finding the Fourth Proportional to 57,431.96, 79,256.36 and 31,940.64

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Solution

The fourth proportional to 57,431.96, 79,256.36 and 31,940.64 is: 44,078.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,431.96 : 79,256.36 = 31,940.64 : x
  2. Step 2: Convert to fraction form
    57,431.96/79,256.36 = 31,940.64/x
  3. Step 3: Cross multiply
    57,431.96x = 79,256.36 × 31,940.64
  4. Step 4: Simplify right side
    57,431.96x = 2,531,498,862.47
  5. Step 5: Solve for x
    x = 2,531,498,862.47/57,431.96
  6. Step 6: Final answer
    x = 44,078.23

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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.