Finding the Fourth Proportional to 68,485.05, 102,721.23 and 48,579.75
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Solution
The fourth proportional to 68,485.05, 102,721.23 and 48,579.75 is: 72,865.12
Step by Step Solution
- Step 1: Write the proportion equation
68,485.05 : 102,721.23 = 48,579.75 : x - Step 2: Convert to fraction form
68,485.05/102,721.23 = 48,579.75/x - Step 3: Cross multiply
68,485.05x = 102,721.23 × 48,579.75 - Step 4: Simplify right side
68,485.05x = 4,990,171,673.09 - Step 5: Solve for x
x = 4,990,171,673.09/68,485.05 - Step 6: Final answer
x = 72,865.12
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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.