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Finding the Fourth Proportional to 66,881.89, 100,322.84 and 16,965.74

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Solution

The fourth proportional to 66,881.89, 100,322.84 and 16,965.74 is: 25,448.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,881.89 : 100,322.84 = 16,965.74 : x
  2. Step 2: Convert to fraction form
    66,881.89/100,322.84 = 16,965.74/x
  3. Step 3: Cross multiply
    66,881.89x = 100,322.84 × 16,965.74
  4. Step 4: Simplify right side
    66,881.89x = 1,702,051,219.50
  5. Step 5: Solve for x
    x = 1,702,051,219.50/66,881.89
  6. Step 6: Final answer
    x = 25,448.61

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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.