Finding the Fourth Proportional to 68,374.24, 102,578.68 and 20,991.75
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Solution
The fourth proportional to 68,374.24, 102,578.68 and 20,991.75 is: 31,492.94
Step by Step Solution
- Step 1: Write the proportion equation
68,374.24 : 102,578.68 = 20,991.75 : x - Step 2: Convert to fraction form
68,374.24/102,578.68 = 20,991.75/x - Step 3: Cross multiply
68,374.24x = 102,578.68 × 20,991.75 - Step 4: Simplify right side
68,374.24x = 2,153,306,005.89 - Step 5: Solve for x
x = 2,153,306,005.89/68,374.24 - Step 6: Final answer
x = 31,492.94
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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.