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Finding the Fourth Proportional to 85,449.42, 117,945.18 and 49,655.52

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Solution

The fourth proportional to 85,449.42, 117,945.18 and 49,655.52 is: 68,539.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,449.42 : 117,945.18 = 49,655.52 : x
  2. Step 2: Convert to fraction form
    85,449.42/117,945.18 = 49,655.52/x
  3. Step 3: Cross multiply
    85,449.42x = 117,945.18 × 49,655.52
  4. Step 4: Simplify right side
    85,449.42x = 5,856,629,244.39
  5. Step 5: Solve for x
    x = 5,856,629,244.39/85,449.42
  6. Step 6: Final answer
    x = 68,539.13

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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.