Finding the Fourth Proportional to 38,420,631.15, 53,021,735.61 and 21,016,578.09
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Solution
The fourth proportional to 38,420,631.15, 53,021,735.61 and 21,016,578.09 is: 29,003,569.53
Step by Step Solution
- Step 1: Write the proportion equation
38,420,631.15 : 53,021,735.61 = 21,016,578.09 : x - Step 2: Convert to fraction form
38,420,631.15/53,021,735.61 = 21,016,578.09/x - Step 3: Cross multiply
38,420,631.15x = 53,021,735.61 × 21,016,578.09 - Step 4: Simplify right side
38,420,631.15x = 1,114,335,446,914,898.75 - Step 5: Solve for x
x = 1,114,335,446,914,898.75/38,420,631.15 - Step 6: Final answer
x = 29,003,569.53
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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.