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Finding the Fourth Proportional to 66,074.47, 91,182.82 and 35,859.78

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Solution

The fourth proportional to 66,074.47, 91,182.82 and 35,859.78 is: 49,486.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,074.47 : 91,182.82 = 35,859.78 : x
  2. Step 2: Convert to fraction form
    66,074.47/91,182.82 = 35,859.78/x
  3. Step 3: Cross multiply
    66,074.47x = 91,182.82 × 35,859.78
  4. Step 4: Simplify right side
    66,074.47x = 3,269,795,864.98
  5. Step 5: Solve for x
    x = 3,269,795,864.98/66,074.47
  6. Step 6: Final answer
    x = 49,486.52

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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.