Finding the Fourth Proportional to 76,979,544.35, 115,486,550.08 and 25,860,168.95
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Solution
The fourth proportional to 76,979,544.35, 115,486,550.08 and 25,860,168.95 is: 38,796,042.78
Step by Step Solution
- Step 1: Write the proportion equation
76,979,544.35 : 115,486,550.08 = 25,860,168.95 : x - Step 2: Convert to fraction form
76,979,544.35/115,486,550.08 = 25,860,168.95/x - Step 3: Cross multiply
76,979,544.35x = 115,486,550.08 × 25,860,168.95 - Step 4: Simplify right side
76,979,544.35x = 2,986,501,695,879,353 - Step 5: Solve for x
x = 2,986,501,695,879,353/76,979,544.35 - Step 6: Final answer
x = 38,796,042.78
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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.