Finding the Fourth Proportional to 38,811,135.78, 53,558,428.86 and 21,407,107.32
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Solution
The fourth proportional to 38,811,135.78, 53,558,428.86 and 21,407,107.32 is: 29,541,290.44
Step by Step Solution
- Step 1: Write the proportion equation
38,811,135.78 : 53,558,428.86 = 21,407,107.32 : x - Step 2: Convert to fraction form
38,811,135.78/53,558,428.86 = 21,407,107.32/x - Step 3: Cross multiply
38,811,135.78x = 53,558,428.86 × 21,407,107.32 - Step 4: Simplify right side
38,811,135.78x = 1,146,531,034,496,605.25 - Step 5: Solve for x
x = 1,146,531,034,496,605.25/38,811,135.78 - Step 6: Final answer
x = 29,541,290.44
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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.