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Finding the Fourth Proportional to 66,604.74, 91,911.69 and 36,389.58

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Solution

The fourth proportional to 66,604.74, 91,911.69 and 36,389.58 is: 50,216.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,604.74 : 91,911.69 = 36,389.58 : x
  2. Step 2: Convert to fraction form
    66,604.74/91,911.69 = 36,389.58/x
  3. Step 3: Cross multiply
    66,604.74x = 91,911.69 × 36,389.58
  4. Step 4: Simplify right side
    66,604.74x = 3,344,627,796.19
  5. Step 5: Solve for x
    x = 3,344,627,796.19/66,604.74
  6. Step 6: Final answer
    x = 50,216.06

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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.