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Finding the Fourth Proportional to 68,664, 94,745.36 and 38,450.64

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Solution

The fourth proportional to 68,664, 94,745.36 and 38,450.64 is: 53,055.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,664 : 94,745.36 = 38,450.64 : x
  2. Step 2: Convert to fraction form
    68,664/94,745.36 = 38,450.64/x
  3. Step 3: Cross multiply
    68,664x = 94,745.36 × 38,450.64
  4. Step 4: Simplify right side
    68,664x = 3,643,019,729.03
  5. Step 5: Solve for x
    x = 3,643,019,729.03/68,664
  6. Step 6: Final answer
    x = 53,055.75

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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.