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Finding the Fourth Proportional to 66,321.58, 91,520.78 and 36,106.14

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Solution

The fourth proportional to 66,321.58, 91,520.78 and 36,106.14 is: 49,824.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,321.58 : 91,520.78 = 36,106.14 : x
  2. Step 2: Convert to fraction form
    66,321.58/91,520.78 = 36,106.14/x
  3. Step 3: Cross multiply
    66,321.58x = 91,520.78 × 36,106.14
  4. Step 4: Simplify right side
    66,321.58x = 3,304,462,095.59
  5. Step 5: Solve for x
    x = 3,304,462,095.59/66,321.58
  6. Step 6: Final answer
    x = 49,824.84

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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.