Home / 87,639.48-131,360.52-43,172.04

Finding the Fourth Proportional to 87,639.48, 131,360.52 and 43,172.04

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Solution

The fourth proportional to 87,639.48, 131,360.52 and 43,172.04 is: 64,709.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,639.48 : 131,360.52 = 43,172.04 : x
  2. Step 2: Convert to fraction form
    87,639.48/131,360.52 = 43,172.04/x
  3. Step 3: Cross multiply
    87,639.48x = 131,360.52 × 43,172.04
  4. Step 4: Simplify right side
    87,639.48x = 5,671,101,623.86
  5. Step 5: Solve for x
    x = 5,671,101,623.86/87,639.48
  6. Step 6: Final answer
    x = 64,709.44

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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.