Finding the Fourth Proportional to 91,218.06, 125,910.99 and 53,491.50
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Solution
The fourth proportional to 91,218.06, 125,910.99 and 53,491.50 is: 73,835.90
Step by Step Solution
- Step 1: Write the proportion equation
91,218.06 : 125,910.99 = 53,491.50 : x - Step 2: Convert to fraction form
91,218.06/125,910.99 = 53,491.50/x - Step 3: Cross multiply
91,218.06x = 125,910.99 × 53,491.50 - Step 4: Simplify right side
91,218.06x = 6,735,167,721.59 - Step 5: Solve for x
x = 6,735,167,721.59/91,218.06 - Step 6: Final answer
x = 73,835.90
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1.5x scale
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.