Home / 87,455.36-131,119.90-34,102.15

Finding the Fourth Proportional to 87,455.36, 131,119.90 and 34,102.15

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Solution

The fourth proportional to 87,455.36, 131,119.90 and 34,102.15 is: 51,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,455.36 : 131,119.90 = 34,102.15 : x
  2. Step 2: Convert to fraction form
    87,455.36/131,119.90 = 34,102.15/x
  3. Step 3: Cross multiply
    87,455.36x = 131,119.90 × 34,102.15
  4. Step 4: Simplify right side
    87,455.36x = 4,471,470,084.73
  5. Step 5: Solve for x
    x = 4,471,470,084.73/87,455.36
  6. Step 6: Final answer
    x = 51,128.60

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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.