Finding the Fourth Proportional to 68,619.80, 102,929.70 and 19,371.80
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Solution
The fourth proportional to 68,619.80, 102,929.70 and 19,371.80 is: 29,057.70
Step by Step Solution
- Step 1: Write the proportion equation
68,619.80 : 102,929.70 = 19,371.80 : x - Step 2: Convert to fraction form
68,619.80/102,929.70 = 19,371.80/x - Step 3: Cross multiply
68,619.80x = 102,929.70 × 19,371.80 - Step 4: Simplify right side
68,619.80x = 1,993,933,562.46 - Step 5: Solve for x
x = 1,993,933,562.46/68,619.80 - Step 6: Final answer
x = 29,057.70
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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.