Home / 87,941.36-131,910.21-21,381.84

Finding the Fourth Proportional to 87,941.36, 131,910.21 and 21,381.84

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Solution

The fourth proportional to 87,941.36, 131,910.21 and 21,381.84 is: 32,072.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,941.36 : 131,910.21 = 21,381.84 : x
  2. Step 2: Convert to fraction form
    87,941.36/131,910.21 = 21,381.84/x
  3. Step 3: Cross multiply
    87,941.36x = 131,910.21 × 21,381.84
  4. Step 4: Simplify right side
    87,941.36x = 2,820,483,004.59
  5. Step 5: Solve for x
    x = 2,820,483,004.59/87,941.36
  6. Step 6: Final answer
    x = 32,072.32

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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.