Finding the Fourth Proportional to 102,731.99, 141,769.73 and 57,409.96
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Solution
The fourth proportional to 102,731.99, 141,769.73 and 57,409.96 is: 79,225.51
Step by Step Solution
- Step 1: Write the proportion equation
102,731.99 : 141,769.73 = 57,409.96 : x - Step 2: Convert to fraction form
102,731.99/141,769.73 = 57,409.96/x - Step 3: Cross multiply
102,731.99x = 141,769.73 × 57,409.96 - Step 4: Simplify right side
102,731.99x = 8,138,994,528.51 - Step 5: Solve for x
x = 8,138,994,528.51/102,731.99 - Step 6: Final answer
x = 79,225.51
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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.