Finding the Fourth Proportional to 76,969,249.60, 115,292,911.20 and 36,063,601.60
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Solution
The fourth proportional to 76,969,249.60, 115,292,911.20 and 36,063,601.60 is: 54,019,983.80
Step by Step Solution
- Step 1: Write the proportion equation
76,969,249.60 : 115,292,911.20 = 36,063,601.60 : x - Step 2: Convert to fraction form
76,969,249.60/115,292,911.20 = 36,063,601.60/x - Step 3: Cross multiply
76,969,249.60x = 115,292,911.20 × 36,063,601.60 - Step 4: Simplify right side
76,969,249.60x = 4,157,877,616,820,978 - Step 5: Solve for x
x = 4,157,877,616,820,978/76,969,249.60 - Step 6: Final answer
x = 54,019,983.80
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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.