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Finding the Fourth Proportional to 66,163.50, 99,245.25 and 16,915.50

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Solution

The fourth proportional to 66,163.50, 99,245.25 and 16,915.50 is: 25,373.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,163.50 : 99,245.25 = 16,915.50 : x
  2. Step 2: Convert to fraction form
    66,163.50/99,245.25 = 16,915.50/x
  3. Step 3: Cross multiply
    66,163.50x = 99,245.25 × 16,915.50
  4. Step 4: Simplify right side
    66,163.50x = 1,678,783,026.38
  5. Step 5: Solve for x
    x = 1,678,783,026.38/66,163.50
  6. Step 6: Final answer
    x = 25,373.25

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Double scale
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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.