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Finding the Fourth Proportional to 68,660, 94,739.84 and 38,446.64

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Solution

The fourth proportional to 68,660, 94,739.84 and 38,446.64 is: 53,050.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,660 : 94,739.84 = 38,446.64 : x
  2. Step 2: Convert to fraction form
    68,660/94,739.84 = 38,446.64/x
  3. Step 3: Cross multiply
    68,660x = 94,739.84 × 38,446.64
  4. Step 4: Simplify right side
    68,660x = 3,642,428,522.14
  5. Step 5: Solve for x
    x = 3,642,428,522.14/68,660
  6. Step 6: Final answer
    x = 53,050.23

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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.