Home / 85,399.08-117,845.92-47,675.76

Finding the Fourth Proportional to 85,399.08, 117,845.92 and 47,675.76

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Solution

The fourth proportional to 85,399.08, 117,845.92 and 47,675.76 is: 65,789.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,399.08 : 117,845.92 = 47,675.76 : x
  2. Step 2: Convert to fraction form
    85,399.08/117,845.92 = 47,675.76/x
  3. Step 3: Cross multiply
    85,399.08x = 117,845.92 × 47,675.76
  4. Step 4: Simplify right side
    85,399.08x = 5,618,393,798.90
  5. Step 5: Solve for x
    x = 5,618,393,798.90/85,399.08
  6. Step 6: Final answer
    x = 65,789.86

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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.