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Finding the Fourth Proportional to 67,021.92, 100,532.94 and 20,274.84

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Solution

The fourth proportional to 67,021.92, 100,532.94 and 20,274.84 is: 30,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,021.92 : 100,532.94 = 20,274.84 : x
  2. Step 2: Convert to fraction form
    67,021.92/100,532.94 = 20,274.84/x
  3. Step 3: Cross multiply
    67,021.92x = 100,532.94 × 20,274.84
  4. Step 4: Simplify right side
    67,021.92x = 2,038,289,273.23
  5. Step 5: Solve for x
    x = 2,038,289,273.23/67,021.92
  6. Step 6: Final answer
    x = 30,412.28

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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.