Finding the Fourth Proportional to 38,702,843.67, 53,409,908.60 and 21,299,188.84
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Solution
The fourth proportional to 38,702,843.67, 53,409,908.60 and 21,299,188.84 is: 29,392,871.98
Step by Step Solution
- Step 1: Write the proportion equation
38,702,843.67 : 53,409,908.60 = 21,299,188.84 : x - Step 2: Convert to fraction form
38,702,843.67/53,409,908.60 = 21,299,188.84/x - Step 3: Cross multiply
38,702,843.67x = 53,409,908.60 × 21,299,188.84 - Step 4: Simplify right side
38,702,843.67x = 1,137,587,729,198,540 - Step 5: Solve for x
x = 1,137,587,729,198,540/38,702,843.67 - Step 6: Final answer
x = 29,392,871.98
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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.