Home / 91,170.36-136,760.40-28,836

Finding the Fourth Proportional to 91,170.36, 136,760.40 and 28,836

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Solution

The fourth proportional to 91,170.36, 136,760.40 and 28,836 is: 43,255.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,170.36 : 136,760.40 = 28,836 : x
  2. Step 2: Convert to fraction form
    91,170.36/136,760.40 = 28,836/x
  3. Step 3: Cross multiply
    91,170.36x = 136,760.40 × 28,836
  4. Step 4: Simplify right side
    91,170.36x = 3,943,622,894.40
  5. Step 5: Solve for x
    x = 3,943,622,894.40/91,170.36
  6. Step 6: Final answer
    x = 43,255.54

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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.