Home / 85,169.18-127,753.78-38,435.42

Finding the Fourth Proportional to 85,169.18, 127,753.78 and 38,435.42

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Solution

The fourth proportional to 85,169.18, 127,753.78 and 38,435.42 is: 57,653.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,169.18 : 127,753.78 = 38,435.42 : x
  2. Step 2: Convert to fraction form
    85,169.18/127,753.78 = 38,435.42/x
  3. Step 3: Cross multiply
    85,169.18x = 127,753.78 × 38,435.42
  4. Step 4: Simplify right side
    85,169.18x = 4,910,270,190.89
  5. Step 5: Solve for x
    x = 4,910,270,190.89/85,169.18
  6. Step 6: Final answer
    x = 57,653.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.