Home / 85,311.72-117,731.37-47,072.94

Finding the Fourth Proportional to 85,311.72, 117,731.37 and 47,072.94

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Solution

The fourth proportional to 85,311.72, 117,731.37 and 47,072.94 is: 64,961.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,311.72 : 117,731.37 = 47,072.94 : x
  2. Step 2: Convert to fraction form
    85,311.72/117,731.37 = 47,072.94/x
  3. Step 3: Cross multiply
    85,311.72x = 117,731.37 × 47,072.94
  4. Step 4: Simplify right side
    85,311.72x = 5,541,961,716.13
  5. Step 5: Solve for x
    x = 5,541,961,716.13/85,311.72
  6. Step 6: Final answer
    x = 64,961.32

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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.