Finding the Fourth Proportional to 128,916,891.54, 193,380,670.35 and 38,040,481.62
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Solution
The fourth proportional to 128,916,891.54, 193,380,670.35 and 38,040,481.62 is: 57,062,296.09
Step by Step Solution
- Step 1: Write the proportion equation
128,916,891.54 : 193,380,670.35 = 38,040,481.62 : x - Step 2: Convert to fraction form
128,916,891.54/193,380,670.35 = 38,040,481.62/x - Step 3: Cross multiply
128,916,891.54x = 193,380,670.35 × 38,040,481.62 - Step 4: Simplify right side
128,916,891.54x = 7,356,293,836,112,453 - Step 5: Solve for x
x = 7,356,293,836,112,453/128,916,891.54 - Step 6: Final answer
x = 57,062,296.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.