Home / 67,271.04-100,908.30-20,523.78

Finding the Fourth Proportional to 67,271.04, 100,908.30 and 20,523.78

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Solution

The fourth proportional to 67,271.04, 100,908.30 and 20,523.78 is: 30,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,271.04 : 100,908.30 = 20,523.78 : x
  2. Step 2: Convert to fraction form
    67,271.04/100,908.30 = 20,523.78/x
  3. Step 3: Cross multiply
    67,271.04x = 100,908.30 × 20,523.78
  4. Step 4: Simplify right side
    67,271.04x = 2,071,019,749.37
  5. Step 5: Solve for x
    x = 2,071,019,749.37/67,271.04
  6. Step 6: Final answer
    x = 30,786.20

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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.