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Finding the Fourth Proportional to 66,889.76, 100,334.84 and 16,969.86

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Solution

The fourth proportional to 66,889.76, 100,334.84 and 16,969.86 is: 25,454.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,889.76 : 100,334.84 = 16,969.86 : x
  2. Step 2: Convert to fraction form
    66,889.76/100,334.84 = 16,969.86/x
  3. Step 3: Cross multiply
    66,889.76x = 100,334.84 × 16,969.86
  4. Step 4: Simplify right side
    66,889.76x = 1,702,668,103.07
  5. Step 5: Solve for x
    x = 1,702,668,103.07/66,889.76
  6. Step 6: Final answer
    x = 25,454.84

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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.