Finding the Fourth Proportional to 83,879.79, 115,715.96 and 49,868.99
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Solution
The fourth proportional to 83,879.79, 115,715.96 and 49,868.99 is: 68,796.52
Step by Step Solution
- Step 1: Write the proportion equation
83,879.79 : 115,715.96 = 49,868.99 : x - Step 2: Convert to fraction form
83,879.79/115,715.96 = 49,868.99/x - Step 3: Cross multiply
83,879.79x = 115,715.96 × 49,868.99 - Step 4: Simplify right side
83,879.79x = 5,770,637,598.17 - Step 5: Solve for x
x = 5,770,637,598.17/83,879.79 - Step 6: Final answer
x = 68,796.52
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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.