Home / 57,080.25-78,765.36-38,645.85

Finding the Fourth Proportional to 57,080.25, 78,765.36 and 38,645.85

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Solution

The fourth proportional to 57,080.25, 78,765.36 and 38,645.85 is: 53,327.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,080.25 : 78,765.36 = 38,645.85 : x
  2. Step 2: Convert to fraction form
    57,080.25/78,765.36 = 38,645.85/x
  3. Step 3: Cross multiply
    57,080.25x = 78,765.36 × 38,645.85
  4. Step 4: Simplify right side
    57,080.25x = 3,043,954,287.76
  5. Step 5: Solve for x
    x = 3,043,954,287.76/57,080.25
  6. Step 6: Final answer
    x = 53,327.63

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1.5x scale

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.