Home / 67,988.64-101,997.36-21,245.04

Finding the Fourth Proportional to 67,988.64, 101,997.36 and 21,245.04

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Solution

The fourth proportional to 67,988.64, 101,997.36 and 21,245.04 is: 31,872.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,988.64 : 101,997.36 = 21,245.04 : x
  2. Step 2: Convert to fraction form
    67,988.64/101,997.36 = 21,245.04/x
  3. Step 3: Cross multiply
    67,988.64x = 101,997.36 × 21,245.04
  4. Step 4: Simplify right side
    67,988.64x = 2,166,937,993.09
  5. Step 5: Solve for x
    x = 2,166,937,993.09/67,988.64
  6. Step 6: Final answer
    x = 31,872.06

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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.