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Finding the Fourth Proportional to 66,866.88, 92,268 and 38,568

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Solution

The fourth proportional to 66,866.88, 92,268 and 38,568 is: 53,219.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,866.88 : 92,268 = 38,568 : x
  2. Step 2: Convert to fraction form
    66,866.88/92,268 = 38,568/x
  3. Step 3: Cross multiply
    66,866.88x = 92,268 × 38,568
  4. Step 4: Simplify right side
    66,866.88x = 3,558,592,224
  5. Step 5: Solve for x
    x = 3,558,592,224/66,866.88
  6. Step 6: Final answer
    x = 53,219.06

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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.