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Finding the Fourth Proportional to 66,458.88, 91,710.72 and 36,650.88

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Solution

The fourth proportional to 66,458.88, 91,710.72 and 36,650.88 is: 50,576.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,458.88 : 91,710.72 = 36,650.88 : x
  2. Step 2: Convert to fraction form
    66,458.88/91,710.72 = 36,650.88/x
  3. Step 3: Cross multiply
    66,458.88x = 91,710.72 × 36,650.88
  4. Step 4: Simplify right side
    66,458.88x = 3,361,278,593.43
  5. Step 5: Solve for x
    x = 3,361,278,593.43/66,458.88
  6. Step 6: Final answer
    x = 50,576.82

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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.