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Finding the Fourth Proportional to 68,647.39, 94,738.64 and 39,580.48

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Solution

The fourth proportional to 68,647.39, 94,738.64 and 39,580.48 is: 54,624.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,647.39 : 94,738.64 = 39,580.48 : x
  2. Step 2: Convert to fraction form
    68,647.39/94,738.64 = 39,580.48/x
  3. Step 3: Cross multiply
    68,647.39x = 94,738.64 × 39,580.48
  4. Step 4: Simplify right side
    68,647.39x = 3,749,800,845.75
  5. Step 5: Solve for x
    x = 3,749,800,845.75/68,647.39
  6. Step 6: Final answer
    x = 54,624.08

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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.