Home / 57,786.75-79,745.72-31,290.75

Finding the Fourth Proportional to 57,786.75, 79,745.72 and 31,290.75

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Solution

The fourth proportional to 57,786.75, 79,745.72 and 31,290.75 is: 43,181.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,786.75 : 79,745.72 = 31,290.75 : x
  2. Step 2: Convert to fraction form
    57,786.75/79,745.72 = 31,290.75/x
  3. Step 3: Cross multiply
    57,786.75x = 79,745.72 × 31,290.75
  4. Step 4: Simplify right side
    57,786.75x = 2,495,303,231.64
  5. Step 5: Solve for x
    x = 2,495,303,231.64/57,786.75
  6. Step 6: Final answer
    x = 43,181.24

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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.