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Finding the Fourth Proportional to 66,836.80, 100,255.32 and 27,386.82

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Solution

The fourth proportional to 66,836.80, 100,255.32 and 27,386.82 is: 41,080.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,836.80 : 100,255.32 = 27,386.82 : x
  2. Step 2: Convert to fraction form
    66,836.80/100,255.32 = 27,386.82/x
  3. Step 3: Cross multiply
    66,836.80x = 100,255.32 × 27,386.82
  4. Step 4: Simplify right side
    66,836.80x = 2,745,674,402.88
  5. Step 5: Solve for x
    x = 2,745,674,402.88/66,836.80
  6. Step 6: Final answer
    x = 41,080.28

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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.