Finding the Fourth Proportional to 69,763.09, 104,644.64 and 20,515.09
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Solution
The fourth proportional to 69,763.09, 104,644.64 and 20,515.09 is: 30,772.64
Step by Step Solution
- Step 1: Write the proportion equation
69,763.09 : 104,644.64 = 20,515.09 : x - Step 2: Convert to fraction form
69,763.09/104,644.64 = 20,515.09/x - Step 3: Cross multiply
69,763.09x = 104,644.64 × 20,515.09 - Step 4: Simplify right side
69,763.09x = 2,146,794,207.62 - Step 5: Solve for x
x = 2,146,794,207.62/69,763.09 - Step 6: Final answer
x = 30,772.64
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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.