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Finding the Fourth Proportional to 66,682.56, 100,021.92 and 16,762.56

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Solution

The fourth proportional to 66,682.56, 100,021.92 and 16,762.56 is: 25,143.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,682.56 : 100,021.92 = 16,762.56 : x
  2. Step 2: Convert to fraction form
    66,682.56/100,021.92 = 16,762.56/x
  3. Step 3: Cross multiply
    66,682.56x = 100,021.92 × 16,762.56
  4. Step 4: Simplify right side
    66,682.56x = 1,676,623,435.32
  5. Step 5: Solve for x
    x = 1,676,623,435.32/66,682.56
  6. Step 6: Final answer
    x = 25,143.36

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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.