Home / 57,076.05-78,759.58-38,641.66

Finding the Fourth Proportional to 57,076.05, 78,759.58 and 38,641.66

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Solution

The fourth proportional to 57,076.05, 78,759.58 and 38,641.66 is: 53,321.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,076.05 : 78,759.58 = 38,641.66 : x
  2. Step 2: Convert to fraction form
    57,076.05/78,759.58 = 38,641.66/x
  3. Step 3: Cross multiply
    57,076.05x = 78,759.58 × 38,641.66
  4. Step 4: Simplify right side
    57,076.05x = 3,043,400,718.89
  5. Step 5: Solve for x
    x = 3,043,400,718.89/57,076.05
  6. Step 6: Final answer
    x = 53,321.86

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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.