Finding the Fourth Proportional to 81,681.67, 122,529.48 and 22,517.38
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Solution
The fourth proportional to 81,681.67, 122,529.48 and 22,517.38 is: 33,777.99
Step by Step Solution
- Step 1: Write the proportion equation
81,681.67 : 122,529.48 = 22,517.38 : x - Step 2: Convert to fraction form
81,681.67/122,529.48 = 22,517.38/x - Step 3: Cross multiply
81,681.67x = 122,529.48 × 22,517.38 - Step 4: Simplify right side
81,681.67x = 2,759,042,862.36 - Step 5: Solve for x
x = 2,759,042,862.36/81,681.67 - Step 6: Final answer
x = 33,777.99
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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.