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Finding the Fourth Proportional to 66,880.89, 100,321.34 and 16,964.74

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Solution

The fourth proportional to 66,880.89, 100,321.34 and 16,964.74 is: 25,447.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,880.89 : 100,321.34 = 16,964.74 : x
  2. Step 2: Convert to fraction form
    66,880.89/100,321.34 = 16,964.74/x
  3. Step 3: Cross multiply
    66,880.89x = 100,321.34 × 16,964.74
  4. Step 4: Simplify right side
    66,880.89x = 1,701,925,490.13
  5. Step 5: Solve for x
    x = 1,701,925,490.13/66,880.89
  6. Step 6: Final answer
    x = 25,447.11

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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.