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Finding the Fourth Proportional to 85,418.01, 117,877.41 and 47,176.49

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Solution

The fourth proportional to 85,418.01, 117,877.41 and 47,176.49 is: 65,103.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,418.01 : 117,877.41 = 47,176.49 : x
  2. Step 2: Convert to fraction form
    85,418.01/117,877.41 = 47,176.49/x
  3. Step 3: Cross multiply
    85,418.01x = 117,877.41 × 47,176.49
  4. Step 4: Simplify right side
    85,418.01x = 5,561,042,748.78
  5. Step 5: Solve for x
    x = 5,561,042,748.78/85,418.01
  6. Step 6: Final answer
    x = 65,103.87

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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.