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Finding the Fourth Proportional to 85,248.78, 117,629.52 and 49,431.84

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Solution

The fourth proportional to 85,248.78, 117,629.52 and 49,431.84 is: 68,207.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,248.78 : 117,629.52 = 49,431.84 : x
  2. Step 2: Convert to fraction form
    85,248.78/117,629.52 = 49,431.84/x
  3. Step 3: Cross multiply
    85,248.78x = 117,629.52 × 49,431.84
  4. Step 4: Simplify right side
    85,248.78x = 5,814,643,611.92
  5. Step 5: Solve for x
    x = 5,814,643,611.92/85,248.78
  6. Step 6: Final answer
    x = 68,207.94

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1.5x scale

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.