Home / 85,270.36-127,905.44-29,105.81

Finding the Fourth Proportional to 85,270.36, 127,905.44 and 29,105.81

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Solution

The fourth proportional to 85,270.36, 127,905.44 and 29,105.81 is: 43,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,270.36 : 127,905.44 = 29,105.81 : x
  2. Step 2: Convert to fraction form
    85,270.36/127,905.44 = 29,105.81/x
  3. Step 3: Cross multiply
    85,270.36x = 127,905.44 × 29,105.81
  4. Step 4: Simplify right side
    85,270.36x = 3,722,790,795.08
  5. Step 5: Solve for x
    x = 3,722,790,795.08/85,270.36
  6. Step 6: Final answer
    x = 43,658.68

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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.