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Finding the Fourth Proportional to 66,968.37, 100,466.37 and 21,993.12

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Solution

The fourth proportional to 66,968.37, 100,466.37 and 21,993.12 is: 32,994.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,968.37 : 100,466.37 = 21,993.12 : x
  2. Step 2: Convert to fraction form
    66,968.37/100,466.37 = 21,993.12/x
  3. Step 3: Cross multiply
    66,968.37x = 100,466.37 × 21,993.12
  4. Step 4: Simplify right side
    66,968.37x = 2,209,568,931.37
  5. Step 5: Solve for x
    x = 2,209,568,931.37/66,968.37
  6. Step 6: Final answer
    x = 32,994.22

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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.