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Finding the Fourth Proportional to 66,642.64, 99,969.11 and 22,269.54

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Solution

The fourth proportional to 66,642.64, 99,969.11 and 22,269.54 is: 33,406.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,642.64 : 99,969.11 = 22,269.54 : x
  2. Step 2: Convert to fraction form
    66,642.64/99,969.11 = 22,269.54/x
  3. Step 3: Cross multiply
    66,642.64x = 99,969.11 × 22,269.54
  4. Step 4: Simplify right side
    66,642.64x = 2,226,266,440.96
  5. Step 5: Solve for x
    x = 2,226,266,440.96/66,642.64
  6. Step 6: Final answer
    x = 33,406.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.