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Finding the Fourth Proportional to 66,315.76, 91,515.49 and 36,100.97

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Solution

The fourth proportional to 66,315.76, 91,515.49 and 36,100.97 is: 49,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,315.76 : 91,515.49 = 36,100.97 : x
  2. Step 2: Convert to fraction form
    66,315.76/91,515.49 = 36,100.97/x
  3. Step 3: Cross multiply
    66,315.76x = 91,515.49 × 36,100.97
  4. Step 4: Simplify right side
    66,315.76x = 3,303,797,754.38
  5. Step 5: Solve for x
    x = 3,303,797,754.38/66,315.76
  6. Step 6: Final answer
    x = 49,819.20

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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.