Finding the Fourth Proportional to 99,927.39, 137,804.49 and 65,420.63
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Solution
The fourth proportional to 99,927.39, 137,804.49 and 65,420.63 is: 90,218.07
Step by Step Solution
- Step 1: Write the proportion equation
99,927.39 : 137,804.49 = 65,420.63 : x - Step 2: Convert to fraction form
99,927.39/137,804.49 = 65,420.63/x - Step 3: Cross multiply
99,927.39x = 137,804.49 × 65,420.63 - Step 4: Simplify right side
99,927.39x = 9,015,256,380.37 - Step 5: Solve for x
x = 9,015,256,380.37/99,927.39 - Step 6: Final answer
x = 90,218.07
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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.