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Finding the Fourth Proportional to 66,397, 91,626.66 and 36,182.59

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Solution

The fourth proportional to 66,397, 91,626.66 and 36,182.59 is: 49,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,397 : 91,626.66 = 36,182.59 : x
  2. Step 2: Convert to fraction form
    66,397/91,626.66 = 36,182.59/x
  3. Step 3: Cross multiply
    66,397x = 91,626.66 × 36,182.59
  4. Step 4: Simplify right side
    66,397x = 3,315,289,871.85
  5. Step 5: Solve for x
    x = 3,315,289,871.85/66,397
  6. Step 6: Final answer
    x = 49,931.32

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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.