Finding the Fourth Proportional to 76,991,522.12, 115,486,278.52 and 18,699,677.92
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Solution
The fourth proportional to 76,991,522.12, 115,486,278.52 and 18,699,677.92 is: 28,049,272.87
Step by Step Solution
- Step 1: Write the proportion equation
76,991,522.12 : 115,486,278.52 = 18,699,677.92 : x - Step 2: Convert to fraction form
76,991,522.12/115,486,278.52 = 18,699,677.92/x - Step 3: Cross multiply
76,991,522.12x = 115,486,278.52 × 18,699,677.92 - Step 4: Simplify right side
76,991,522.12x = 2,159,556,212,503,414.50 - Step 5: Solve for x
x = 2,159,556,212,503,414.50/76,991,522.12 - Step 6: Final answer
x = 28,049,272.87
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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.