Finding the Fourth Proportional to 38,687,843.96, 53,389,224.34 and 21,283,815.68
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Solution
The fourth proportional to 38,687,843.96, 53,389,224.34 and 21,283,815.68 is: 29,371,665.46
Step by Step Solution
- Step 1: Write the proportion equation
38,687,843.96 : 53,389,224.34 = 21,283,815.68 : x - Step 2: Convert to fraction form
38,687,843.96/53,389,224.34 = 21,283,815.68/x - Step 3: Cross multiply
38,687,843.96x = 53,389,224.34 × 21,283,815.68 - Step 4: Simplify right side
38,687,843.96x = 1,136,326,410,150,729.75 - Step 5: Solve for x
x = 1,136,326,410,150,729.75/38,687,843.96 - Step 6: Final answer
x = 29,371,665.46
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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.