Finding the Fourth Proportional to 81,111.42, 121,670.48 and 27,839.99
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Solution
The fourth proportional to 81,111.42, 121,670.48 and 27,839.99 is: 41,761.14
Step by Step Solution
- Step 1: Write the proportion equation
81,111.42 : 121,670.48 = 27,839.99 : x - Step 2: Convert to fraction form
81,111.42/121,670.48 = 27,839.99/x - Step 3: Cross multiply
81,111.42x = 121,670.48 × 27,839.99 - Step 4: Simplify right side
81,111.42x = 3,387,305,320.27 - Step 5: Solve for x
x = 3,387,305,320.27/81,111.42 - Step 6: Final answer
x = 41,761.14
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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.