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Finding the Fourth Proportional to 66,633.90, 91,954.58 and 36,419.22

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Solution

The fourth proportional to 66,633.90, 91,954.58 and 36,419.22 is: 50,258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,633.90 : 91,954.58 = 36,419.22 : x
  2. Step 2: Convert to fraction form
    66,633.90/91,954.58 = 36,419.22/x
  3. Step 3: Cross multiply
    66,633.90x = 91,954.58 × 36,419.22
  4. Step 4: Simplify right side
    66,633.90x = 3,348,914,079.03
  5. Step 5: Solve for x
    x = 3,348,914,079.03/66,633.90
  6. Step 6: Final answer
    x = 50,258.41

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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.