Home / 66,057.48-91,144.98-39,208.86

Finding the Fourth Proportional to 66,057.48, 91,144.98 and 39,208.86

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Solution

The fourth proportional to 66,057.48, 91,144.98 and 39,208.86 is: 54,099.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,057.48 : 91,144.98 = 39,208.86 : x
  2. Step 2: Convert to fraction form
    66,057.48/91,144.98 = 39,208.86/x
  3. Step 3: Cross multiply
    66,057.48x = 91,144.98 × 39,208.86
  4. Step 4: Simplify right side
    66,057.48x = 3,573,690,760.52
  5. Step 5: Solve for x
    x = 3,573,690,760.52/66,057.48
  6. Step 6: Final answer
    x = 54,099.71

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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.