Home / 85,391.25-128,103.21-32,796.60

Finding the Fourth Proportional to 85,391.25, 128,103.21 and 32,796.60

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Solution

The fourth proportional to 85,391.25, 128,103.21 and 32,796.60 is: 49,201.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,391.25 : 128,103.21 = 32,796.60 : x
  2. Step 2: Convert to fraction form
    85,391.25/128,103.21 = 32,796.60/x
  3. Step 3: Cross multiply
    85,391.25x = 128,103.21 × 32,796.60
  4. Step 4: Simplify right side
    85,391.25x = 4,201,349,737.09
  5. Step 5: Solve for x
    x = 4,201,349,737.09/85,391.25
  6. Step 6: Final answer
    x = 49,201.17

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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.