Finding the Fourth Proportional to 78,245,187.98, 117,381,310.18 and 26,430,167.97
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Solution
The fourth proportional to 78,245,187.98, 117,381,310.18 and 26,430,167.97 is: 39,649,821.60
Step by Step Solution
- Step 1: Write the proportion equation
78,245,187.98 : 117,381,310.18 = 26,430,167.97 : x - Step 2: Convert to fraction form
78,245,187.98/117,381,310.18 = 26,430,167.97/x - Step 3: Cross multiply
78,245,187.98x = 117,381,310.18 × 26,430,167.97 - Step 4: Simplify right side
78,245,187.98x = 3,102,407,744,529,995 - Step 5: Solve for x
x = 3,102,407,744,529,995/78,245,187.98 - Step 6: Final answer
x = 39,649,821.60
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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.