Finding the Fourth Proportional to 81,036.93, 121,554.42 and 21,060.09
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Solution
The fourth proportional to 81,036.93, 121,554.42 and 21,060.09 is: 31,589.88
Step by Step Solution
- Step 1: Write the proportion equation
81,036.93 : 121,554.42 = 21,060.09 : x - Step 2: Convert to fraction form
81,036.93/121,554.42 = 21,060.09/x - Step 3: Cross multiply
81,036.93x = 121,554.42 × 21,060.09 - Step 4: Simplify right side
81,036.93x = 2,559,947,025.10 - Step 5: Solve for x
x = 2,559,947,025.10/81,036.93 - Step 6: Final answer
x = 31,589.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.