Finding the Fourth Proportional to 18,144,619.80, 27,216,929.70 and 4,681,447.80
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Solution
The fourth proportional to 18,144,619.80, 27,216,929.70 and 4,681,447.80 is: 7,022,171.70
Step by Step Solution
- Step 1: Write the proportion equation
18,144,619.80 : 27,216,929.70 = 4,681,447.80 : x - Step 2: Convert to fraction form
18,144,619.80/27,216,929.70 = 4,681,447.80/x - Step 3: Cross multiply
18,144,619.80x = 27,216,929.70 × 4,681,447.80 - Step 4: Simplify right side
18,144,619.80x = 127,414,635,666,819.66 - Step 5: Solve for x
x = 127,414,635,666,819.66/18,144,619.80 - Step 6: Final answer
x = 7,022,171.70
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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.