Home / 66,564.18-91,865.19-39,706.68

Finding the Fourth Proportional to 66,564.18, 91,865.19 and 39,706.68

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Solution

The fourth proportional to 66,564.18, 91,865.19 and 39,706.68 is: 54,799.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,564.18 : 91,865.19 = 39,706.68 : x
  2. Step 2: Convert to fraction form
    66,564.18/91,865.19 = 39,706.68/x
  3. Step 3: Cross multiply
    66,564.18x = 91,865.19 × 39,706.68
  4. Step 4: Simplify right side
    66,564.18x = 3,647,661,702.47
  5. Step 5: Solve for x
    x = 3,647,661,702.47/66,564.18
  6. Step 6: Final answer
    x = 54,799.17

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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.