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Finding the Fourth Proportional to 66,676.50, 100,014.75 and 17,428.50

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Solution

The fourth proportional to 66,676.50, 100,014.75 and 17,428.50 is: 26,142.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,676.50 : 100,014.75 = 17,428.50 : x
  2. Step 2: Convert to fraction form
    66,676.50/100,014.75 = 17,428.50/x
  3. Step 3: Cross multiply
    66,676.50x = 100,014.75 × 17,428.50
  4. Step 4: Simplify right side
    66,676.50x = 1,743,107,070.38
  5. Step 5: Solve for x
    x = 1,743,107,070.38/66,676.50
  6. Step 6: Final answer
    x = 26,142.75

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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.