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Finding the Fourth Proportional to 66,314.54, 91,515.99 and 36,101.81

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Solution

The fourth proportional to 66,314.54, 91,515.99 and 36,101.81 is: 49,821.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,314.54 : 91,515.99 = 36,101.81 : x
  2. Step 2: Convert to fraction form
    66,314.54/91,515.99 = 36,101.81/x
  3. Step 3: Cross multiply
    66,314.54x = 91,515.99 × 36,101.81
  4. Step 4: Simplify right side
    66,314.54x = 3,303,892,425.36
  5. Step 5: Solve for x
    x = 3,303,892,425.36/66,314.54
  6. Step 6: Final answer
    x = 49,821.54

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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.