Home / 66,618.14-91,934.06-39,776.36

Finding the Fourth Proportional to 66,618.14, 91,934.06 and 39,776.36

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Solution

The fourth proportional to 66,618.14, 91,934.06 and 39,776.36 is: 54,891.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,618.14 : 91,934.06 = 39,776.36 : x
  2. Step 2: Convert to fraction form
    66,618.14/91,934.06 = 39,776.36/x
  3. Step 3: Cross multiply
    66,618.14x = 91,934.06 × 39,776.36
  4. Step 4: Simplify right side
    66,618.14x = 3,656,801,608.27
  5. Step 5: Solve for x
    x = 3,656,801,608.27/66,618.14
  6. Step 6: Final answer
    x = 54,891.98

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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.