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Finding the Fourth Proportional to 66,315.88, 91,515.90 and 36,101.42

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Solution

The fourth proportional to 66,315.88, 91,515.90 and 36,101.42 is: 49,819.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,315.88 : 91,515.90 = 36,101.42 : x
  2. Step 2: Convert to fraction form
    66,315.88/91,515.90 = 36,101.42/x
  3. Step 3: Cross multiply
    66,315.88x = 91,515.90 × 36,101.42
  4. Step 4: Simplify right side
    66,315.88x = 3,303,853,942.58
  5. Step 5: Solve for x
    x = 3,303,853,942.58/66,315.88
  6. Step 6: Final answer
    x = 49,819.95

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1.5x scale

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.