Finding the Fourth Proportional to 103,288.53, 142,540.73 and 57,969.97
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Solution
The fourth proportional to 103,288.53, 142,540.73 and 57,969.97 is: 79,999.99
Step by Step Solution
- Step 1: Write the proportion equation
103,288.53 : 142,540.73 = 57,969.97 : x - Step 2: Convert to fraction form
103,288.53/142,540.73 = 57,969.97/x - Step 3: Cross multiply
103,288.53x = 142,540.73 × 57,969.97 - Step 4: Simplify right side
103,288.53x = 8,263,081,893.24 - Step 5: Solve for x
x = 8,263,081,893.24/103,288.53 - Step 6: Final answer
x = 79,999.99
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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.