Home / 66,639.91-91,963.16-38,351.11

Finding the Fourth Proportional to 66,639.91, 91,963.16 and 38,351.11

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Solution

The fourth proportional to 66,639.91, 91,963.16 and 38,351.11 is: 52,924.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,639.91 : 91,963.16 = 38,351.11 : x
  2. Step 2: Convert to fraction form
    66,639.91/91,963.16 = 38,351.11/x
  3. Step 3: Cross multiply
    66,639.91x = 91,963.16 × 38,351.11
  4. Step 4: Simplify right side
    66,639.91x = 3,526,889,265.11
  5. Step 5: Solve for x
    x = 3,526,889,265.11/66,639.91
  6. Step 6: Final answer
    x = 52,924.58

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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.