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Finding the Fourth Proportional to 66,415.71, 91,653.08 and 36,201.04

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Solution

The fourth proportional to 66,415.71, 91,653.08 and 36,201.04 is: 49,957.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,415.71 : 91,653.08 = 36,201.04 : x
  2. Step 2: Convert to fraction form
    66,415.71/91,653.08 = 36,201.04/x
  3. Step 3: Cross multiply
    66,415.71x = 91,653.08 × 36,201.04
  4. Step 4: Simplify right side
    66,415.71x = 3,317,936,676.57
  5. Step 5: Solve for x
    x = 3,317,936,676.57/66,415.71
  6. Step 6: Final answer
    x = 49,957.11

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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.