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Finding the Fourth Proportional to 66,962.34, 100,441.08 and 20,214

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Solution

The fourth proportional to 66,962.34, 100,441.08 and 20,214 is: 30,320.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,962.34 : 100,441.08 = 20,214 : x
  2. Step 2: Convert to fraction form
    66,962.34/100,441.08 = 20,214/x
  3. Step 3: Cross multiply
    66,962.34x = 100,441.08 × 20,214
  4. Step 4: Simplify right side
    66,962.34x = 2,030,315,991.12
  5. Step 5: Solve for x
    x = 2,030,315,991.12/66,962.34
  6. Step 6: Final answer
    x = 30,320.27

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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.