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Finding the Fourth Proportional to 71,340.21, 107,002.22 and 18,753.80

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Solution

The fourth proportional to 71,340.21, 107,002.22 and 18,753.80 is: 28,128.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,340.21 : 107,002.22 = 18,753.80 : x
  2. Step 2: Convert to fraction form
    71,340.21/107,002.22 = 18,753.80/x
  3. Step 3: Cross multiply
    71,340.21x = 107,002.22 × 18,753.80
  4. Step 4: Simplify right side
    71,340.21x = 2,006,697,604.66
  5. Step 5: Solve for x
    x = 2,006,697,604.66/71,340.21
  6. Step 6: Final answer
    x = 28,128.56

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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.