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Finding the Fourth Proportional to 66,890.26, 92,299.44 and 40,026.52

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Solution

The fourth proportional to 66,890.26, 92,299.44 and 40,026.52 is: 55,231.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,890.26 : 92,299.44 = 40,026.52 : x
  2. Step 2: Convert to fraction form
    66,890.26/92,299.44 = 40,026.52/x
  3. Step 3: Cross multiply
    66,890.26x = 92,299.44 × 40,026.52
  4. Step 4: Simplify right side
    66,890.26x = 3,694,425,381.15
  5. Step 5: Solve for x
    x = 3,694,425,381.15/66,890.26
  6. Step 6: Final answer
    x = 55,231.14

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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.