Finding the Fourth Proportional to 81,538.25, 112,522.99 and 47,570.09
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Solution
The fourth proportional to 81,538.25, 112,522.99 and 47,570.09 is: 65,646.84
Step by Step Solution
- Step 1: Write the proportion equation
81,538.25 : 112,522.99 = 47,570.09 : x - Step 2: Convert to fraction form
81,538.25/112,522.99 = 47,570.09/x - Step 3: Cross multiply
81,538.25x = 112,522.99 × 47,570.09 - Step 4: Simplify right side
81,538.25x = 5,352,728,761.37 - Step 5: Solve for x
x = 5,352,728,761.37/81,538.25 - Step 6: Final answer
x = 65,646.84
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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.