Finding the Fourth Proportional to 81,908,746.71, 122,863,577.33 and 27,321,181.62
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Solution
The fourth proportional to 81,908,746.71, 122,863,577.33 and 27,321,181.62 is: 40,981,924.95
Step by Step Solution
- Step 1: Write the proportion equation
81,908,746.71 : 122,863,577.33 = 27,321,181.62 : x - Step 2: Convert to fraction form
81,908,746.71/122,863,577.33 = 27,321,181.62/x - Step 3: Cross multiply
81,908,746.71x = 122,863,577.33 × 27,321,181.62 - Step 4: Simplify right side
81,908,746.71x = 3,356,778,110,715,845 - Step 5: Solve for x
x = 3,356,778,110,715,845/81,908,746.71 - Step 6: Final answer
x = 40,981,924.95
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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.