Finding the Fourth Proportional to 39,379,195,872.48, 54,343,292,955.36 and 21,557,853,378.72
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Solution
The fourth proportional to 39,379,195,872.48, 54,343,292,955.36 and 21,557,853,378.72 is: 29,749,839,114.09
Step by Step Solution
- Step 1: Write the proportion equation
39,379,195,872.48 : 54,343,292,955.36 = 21,557,853,378.72 : x - Step 2: Convert to fraction form
39,379,195,872.48/54,343,292,955.36 = 21,557,853,378.72/x - Step 3: Cross multiply
39,379,195,872.48x = 54,343,292,955.36 × 21,557,853,378.72 - Step 4: Simplify right side
39,379,195,872.48x = 1,171,524,741,648,478,371,840 - Step 5: Solve for x
x = 1,171,524,741,648,478,371,840/39,379,195,872.48 - Step 6: Final answer
x = 29,749,839,114.09
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1.5x scale
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.