Home / 87,485.87-131,196.54-31,310.75

Finding the Fourth Proportional to 87,485.87, 131,196.54 and 31,310.75

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Solution

The fourth proportional to 87,485.87, 131,196.54 and 31,310.75 is: 46,954.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,485.87 : 131,196.54 = 31,310.75 : x
  2. Step 2: Convert to fraction form
    87,485.87/131,196.54 = 31,310.75/x
  3. Step 3: Cross multiply
    87,485.87x = 131,196.54 × 31,310.75
  4. Step 4: Simplify right side
    87,485.87x = 4,107,862,064.81
  5. Step 5: Solve for x
    x = 4,107,862,064.81/87,485.87
  6. Step 6: Final answer
    x = 46,954.58

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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.