Finding the Fourth Proportional to 99,381.13, 149,071.79 and 43,218.97
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Solution
The fourth proportional to 99,381.13, 149,071.79 and 43,218.97 is: 64,828.50
Step by Step Solution
- Step 1: Write the proportion equation
99,381.13 : 149,071.79 = 43,218.97 : x - Step 2: Convert to fraction form
99,381.13/149,071.79 = 43,218.97/x - Step 3: Cross multiply
99,381.13x = 149,071.79 × 43,218.97 - Step 4: Simplify right side
99,381.13x = 6,442,728,955.22 - Step 5: Solve for x
x = 6,442,728,955.22/99,381.13 - Step 6: Final answer
x = 64,828.50
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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.