Finding the Fourth Proportional to 76,788,458.80, 115,182,688.20 and 74,662,694.80
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Solution
The fourth proportional to 76,788,458.80, 115,182,688.20 and 74,662,694.80 is: 111,994,042.20
Step by Step Solution
- Step 1: Write the proportion equation
76,788,458.80 : 115,182,688.20 = 74,662,694.80 : x - Step 2: Convert to fraction form
76,788,458.80/115,182,688.20 = 74,662,694.80/x - Step 3: Cross multiply
76,788,458.80x = 115,182,688.20 × 74,662,694.80 - Step 4: Simplify right side
76,788,458.80x = 8,599,849,895,320,161 - Step 5: Solve for x
x = 8,599,849,895,320,161/76,788,458.80 - Step 6: Final answer
x = 111,994,042.20
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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.