Home / 64,915.75-89,584.14-39,765.25

Finding the Fourth Proportional to 64,915.75, 89,584.14 and 39,765.25

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Solution

The fourth proportional to 64,915.75, 89,584.14 and 39,765.25 is: 54,876.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,915.75 : 89,584.14 = 39,765.25 : x
  2. Step 2: Convert to fraction form
    64,915.75/89,584.14 = 39,765.25/x
  3. Step 3: Cross multiply
    64,915.75x = 89,584.14 × 39,765.25
  4. Step 4: Simplify right side
    64,915.75x = 3,562,335,723.14
  5. Step 5: Solve for x
    x = 3,562,335,723.14/64,915.75
  6. Step 6: Final answer
    x = 54,876.29

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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.