Finding the Fourth Proportional to 68,563.80, 102,845.70 and 40,915.80
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Solution
The fourth proportional to 68,563.80, 102,845.70 and 40,915.80 is: 61,373.70
Step by Step Solution
- Step 1: Write the proportion equation
68,563.80 : 102,845.70 = 40,915.80 : x - Step 2: Convert to fraction form
68,563.80/102,845.70 = 40,915.80/x - Step 3: Cross multiply
68,563.80x = 102,845.70 × 40,915.80 - Step 4: Simplify right side
68,563.80x = 4,208,014,092.06 - Step 5: Solve for x
x = 4,208,014,092.06/68,563.80 - Step 6: Final answer
x = 61,373.70
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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.