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Finding the Fourth Proportional to 85,481.34, 117,956.30 and 49,670.84

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Solution

The fourth proportional to 85,481.34, 117,956.30 and 49,670.84 is: 68,541.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,481.34 : 117,956.30 = 49,670.84 : x
  2. Step 2: Convert to fraction form
    85,481.34/117,956.30 = 49,670.84/x
  3. Step 3: Cross multiply
    85,481.34x = 117,956.30 × 49,670.84
  4. Step 4: Simplify right side
    85,481.34x = 5,858,987,666.16
  5. Step 5: Solve for x
    x = 5,858,987,666.16/85,481.34
  6. Step 6: Final answer
    x = 68,541.13

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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.