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Finding the Fourth Proportional to 85,072.56, 117,383.22 and 47,339.52

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Solution

The fourth proportional to 85,072.56, 117,383.22 and 47,339.52 is: 65,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,072.56 : 117,383.22 = 47,339.52 : x
  2. Step 2: Convert to fraction form
    85,072.56/117,383.22 = 47,339.52/x
  3. Step 3: Cross multiply
    85,072.56x = 117,383.22 × 47,339.52
  4. Step 4: Simplify right side
    85,072.56x = 5,556,865,290.85
  5. Step 5: Solve for x
    x = 5,556,865,290.85/85,072.56
  6. Step 6: Final answer
    x = 65,319.13

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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.