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Finding the Fourth Proportional to 66,449, 91,699.62 and 36,641

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Solution

The fourth proportional to 66,449, 91,699.62 and 36,641 is: 50,564.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,449 : 91,699.62 = 36,641 : x
  2. Step 2: Convert to fraction form
    66,449/91,699.62 = 36,641/x
  3. Step 3: Cross multiply
    66,449x = 91,699.62 × 36,641
  4. Step 4: Simplify right side
    66,449x = 3,359,965,776.42
  5. Step 5: Solve for x
    x = 3,359,965,776.42/66,449
  6. Step 6: Final answer
    x = 50,564.58

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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.