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Finding the Fourth Proportional to 85,081.99, 117,419.94 and 49,272.64

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Solution

The fourth proportional to 85,081.99, 117,419.94 and 49,272.64 is: 68,000.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,081.99 : 117,419.94 = 49,272.64 : x
  2. Step 2: Convert to fraction form
    85,081.99/117,419.94 = 49,272.64/x
  3. Step 3: Cross multiply
    85,081.99x = 117,419.94 × 49,272.64
  4. Step 4: Simplify right side
    85,081.99x = 5,785,590,432.44
  5. Step 5: Solve for x
    x = 5,785,590,432.44/85,081.99
  6. Step 6: Final answer
    x = 68,000.18

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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.