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Finding the Fourth Proportional to 66,142.91, 91,242.23 and 41,901.11

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Solution

The fourth proportional to 66,142.91, 91,242.23 and 41,901.11 is: 57,801.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,142.91 : 91,242.23 = 41,901.11 : x
  2. Step 2: Convert to fraction form
    66,142.91/91,242.23 = 41,901.11/x
  3. Step 3: Cross multiply
    66,142.91x = 91,242.23 × 41,901.11
  4. Step 4: Simplify right side
    66,142.91x = 3,823,150,506.37
  5. Step 5: Solve for x
    x = 3,823,150,506.37/66,142.91
  6. Step 6: Final answer
    x = 57,801.37

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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.