Home / 87,989.16-131,997.30-28,810.56

Finding the Fourth Proportional to 87,989.16, 131,997.30 and 28,810.56

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Solution

The fourth proportional to 87,989.16, 131,997.30 and 28,810.56 is: 43,220.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,989.16 : 131,997.30 = 28,810.56 : x
  2. Step 2: Convert to fraction form
    87,989.16/131,997.30 = 28,810.56/x
  3. Step 3: Cross multiply
    87,989.16x = 131,997.30 × 28,810.56
  4. Step 4: Simplify right side
    87,989.16x = 3,802,916,131.49
  5. Step 5: Solve for x
    x = 3,802,916,131.49/87,989.16
  6. Step 6: Final answer
    x = 43,220.28

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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.