Finding the Fourth Proportional to 81,908,747.71, 122,863,578.83 and 27,321,182.62
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Solution
The fourth proportional to 81,908,747.71, 122,863,578.83 and 27,321,182.62 is: 40,981,926.45
Step by Step Solution
- Step 1: Write the proportion equation
81,908,747.71 : 122,863,578.83 = 27,321,182.62 : x - Step 2: Convert to fraction form
81,908,747.71/122,863,578.83 = 27,321,182.62/x - Step 3: Cross multiply
81,908,747.71x = 122,863,578.83 × 27,321,182.62 - Step 4: Simplify right side
81,908,747.71x = 3,356,778,274,561,196 - Step 5: Solve for x
x = 3,356,778,274,561,196/81,908,747.71 - Step 6: Final answer
x = 40,981,926.45
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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.