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Finding the Fourth Proportional to 67,390.30, 101,067.22 and 20,005.30

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Solution

The fourth proportional to 67,390.30, 101,067.22 and 20,005.30 is: 30,002.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,390.30 : 101,067.22 = 20,005.30 : x
  2. Step 2: Convert to fraction form
    67,390.30/101,067.22 = 20,005.30/x
  3. Step 3: Cross multiply
    67,390.30x = 101,067.22 × 20,005.30
  4. Step 4: Simplify right side
    67,390.30x = 2,021,880,056.27
  5. Step 5: Solve for x
    x = 2,021,880,056.27/67,390.30
  6. Step 6: Final answer
    x = 30,002.54

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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.