Home / 85,584.30-128,406.83-38,195.07

Finding the Fourth Proportional to 85,584.30, 128,406.83 and 38,195.07

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Solution

The fourth proportional to 85,584.30, 128,406.83 and 38,195.07 is: 57,306.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,584.30 : 128,406.83 = 38,195.07 : x
  2. Step 2: Convert to fraction form
    85,584.30/128,406.83 = 38,195.07/x
  3. Step 3: Cross multiply
    85,584.30x = 128,406.83 × 38,195.07
  4. Step 4: Simplify right side
    85,584.30x = 4,904,507,860.33
  5. Step 5: Solve for x
    x = 4,904,507,860.33/85,584.30
  6. Step 6: Final answer
    x = 57,306.16

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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.