Finding the Fourth Proportional to 112,744.89, 155,581.93 and 61,754.99
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Solution
The fourth proportional to 112,744.89, 155,581.93 and 61,754.99 is: 85,218.58
Step by Step Solution
- Step 1: Write the proportion equation
112,744.89 : 155,581.93 = 61,754.99 : x - Step 2: Convert to fraction form
112,744.89/155,581.93 = 61,754.99/x - Step 3: Cross multiply
112,744.89x = 155,581.93 × 61,754.99 - Step 4: Simplify right side
112,744.89x = 9,607,959,987.99 - Step 5: Solve for x
x = 9,607,959,987.99/112,744.89 - Step 6: Final answer
x = 85,218.58
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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.