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Finding the Fourth Proportional to 66,114.36, 91,224.99 and 39,265.29

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Solution

The fourth proportional to 66,114.36, 91,224.99 and 39,265.29 is: 54,178.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,114.36 : 91,224.99 = 39,265.29 : x
  2. Step 2: Convert to fraction form
    66,114.36/91,224.99 = 39,265.29/x
  3. Step 3: Cross multiply
    66,114.36x = 91,224.99 × 39,265.29
  4. Step 4: Simplify right side
    66,114.36x = 3,581,975,817.50
  5. Step 5: Solve for x
    x = 3,581,975,817.50/66,114.36
  6. Step 6: Final answer
    x = 54,178.48

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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.