Finding the Fourth Proportional to 30,581,757,618.74, 42,204,946,609.80 and 18,539,275,994.09
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Solution
The fourth proportional to 30,581,757,618.74, 42,204,946,609.80 and 18,539,275,994.09 is: 25,585,486,722.82
Step by Step Solution
- Step 1: Write the proportion equation
30,581,757,618.74 : 42,204,946,609.80 = 18,539,275,994.09 : x - Step 2: Convert to fraction form
30,581,757,618.74/42,204,946,609.80 = 18,539,275,994.09/x - Step 3: Cross multiply
30,581,757,618.74x = 42,204,946,609.80 × 18,539,275,994.09 - Step 4: Simplify right side
30,581,757,618.74x = 782,449,153,514,704,207,872 - Step 5: Solve for x
x = 782,449,153,514,704,207,872/30,581,757,618.74 - Step 6: Final answer
x = 25,585,486,722.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.