Home / 85,144.30-117,502.78-47,418.55

Finding the Fourth Proportional to 85,144.30, 117,502.78 and 47,418.55

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Solution

The fourth proportional to 85,144.30, 117,502.78 and 47,418.55 is: 65,439.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,144.30 : 117,502.78 = 47,418.55 : x
  2. Step 2: Convert to fraction form
    85,144.30/117,502.78 = 47,418.55/x
  3. Step 3: Cross multiply
    85,144.30x = 117,502.78 × 47,418.55
  4. Step 4: Simplify right side
    85,144.30x = 5,571,811,860.87
  5. Step 5: Solve for x
    x = 5,571,811,860.87/85,144.30
  6. Step 6: Final answer
    x = 65,439.63

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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.