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Finding the Fourth Proportional to 67,614.80, 101,400.60 and 28,162.40

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Solution

The fourth proportional to 67,614.80, 101,400.60 and 28,162.40 is: 42,234.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,614.80 : 101,400.60 = 28,162.40 : x
  2. Step 2: Convert to fraction form
    67,614.80/101,400.60 = 28,162.40/x
  3. Step 3: Cross multiply
    67,614.80x = 101,400.60 × 28,162.40
  4. Step 4: Simplify right side
    67,614.80x = 2,855,684,257.44
  5. Step 5: Solve for x
    x = 2,855,684,257.44/67,614.80
  6. Step 6: Final answer
    x = 42,234.60

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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.