Finding the Fourth Proportional to 91,709.46, 126,505.30 and 57,663.99
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Solution
The fourth proportional to 91,709.46, 126,505.30 and 57,663.99 is: 79,542.51
Step by Step Solution
- Step 1: Write the proportion equation
91,709.46 : 126,505.30 = 57,663.99 : x - Step 2: Convert to fraction form
91,709.46/126,505.30 = 57,663.99/x - Step 3: Cross multiply
91,709.46x = 126,505.30 × 57,663.99 - Step 4: Simplify right side
91,709.46x = 7,294,800,354.15 - Step 5: Solve for x
x = 7,294,800,354.15/91,709.46 - Step 6: Final answer
x = 79,542.51
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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.