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Finding the Fourth Proportional to 67,794.30, 101,690.37 and 21,047.22

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Solution

The fourth proportional to 67,794.30, 101,690.37 and 21,047.22 is: 31,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,794.30 : 101,690.37 = 21,047.22 : x
  2. Step 2: Convert to fraction form
    67,794.30/101,690.37 = 21,047.22/x
  3. Step 3: Cross multiply
    67,794.30x = 101,690.37 × 21,047.22
  4. Step 4: Simplify right side
    67,794.30x = 2,140,299,589.27
  5. Step 5: Solve for x
    x = 2,140,299,589.27/67,794.30
  6. Step 6: Final answer
    x = 31,570.49

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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.