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Finding the Fourth Proportional to 66,278.42, 91,461.46 and 36,063.86

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Solution

The fourth proportional to 66,278.42, 91,461.46 and 36,063.86 is: 49,766.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,278.42 : 91,461.46 = 36,063.86 : x
  2. Step 2: Convert to fraction form
    66,278.42/91,461.46 = 36,063.86/x
  3. Step 3: Cross multiply
    66,278.42x = 91,461.46 × 36,063.86
  4. Step 4: Simplify right side
    66,278.42x = 3,298,453,288.84
  5. Step 5: Solve for x
    x = 3,298,453,288.84/66,278.42
  6. Step 6: Final answer
    x = 49,766.63

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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.