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Finding the Fourth Proportional to 67,472.40, 101,208.60 and 20,725.20

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Solution

The fourth proportional to 67,472.40, 101,208.60 and 20,725.20 is: 31,087.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,472.40 : 101,208.60 = 20,725.20 : x
  2. Step 2: Convert to fraction form
    67,472.40/101,208.60 = 20,725.20/x
  3. Step 3: Cross multiply
    67,472.40x = 101,208.60 × 20,725.20
  4. Step 4: Simplify right side
    67,472.40x = 2,097,568,476.72
  5. Step 5: Solve for x
    x = 2,097,568,476.72/67,472.40
  6. Step 6: Final answer
    x = 31,087.80

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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.