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Finding the Fourth Proportional to 66,398.43, 91,626.30 and 38,102.25

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Solution

The fourth proportional to 66,398.43, 91,626.30 and 38,102.25 is: 52,579.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,398.43 : 91,626.30 = 38,102.25 : x
  2. Step 2: Convert to fraction form
    66,398.43/91,626.30 = 38,102.25/x
  3. Step 3: Cross multiply
    66,398.43x = 91,626.30 × 38,102.25
  4. Step 4: Simplify right side
    66,398.43x = 3,491,168,189.18
  5. Step 5: Solve for x
    x = 3,491,168,189.18/66,398.43
  6. Step 6: Final answer
    x = 52,579.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.