Home / 87,431.63-131,115.26-31,256.51

Finding the Fourth Proportional to 87,431.63, 131,115.26 and 31,256.51

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Solution

The fourth proportional to 87,431.63, 131,115.26 and 31,256.51 is: 46,873.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,431.63 : 131,115.26 = 31,256.51 : x
  2. Step 2: Convert to fraction form
    87,431.63/131,115.26 = 31,256.51/x
  3. Step 3: Cross multiply
    87,431.63x = 131,115.26 × 31,256.51
  4. Step 4: Simplify right side
    87,431.63x = 4,098,204,623.48
  5. Step 5: Solve for x
    x = 4,098,204,623.48/87,431.63
  6. Step 6: Final answer
    x = 46,873.25

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1.5x scale

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.