Finding the Fourth Proportional to 87,084.09, 120,187.16 and 51,277.42
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Solution
The fourth proportional to 87,084.09, 120,187.16 and 51,277.42 is: 70,769.38
Step by Step Solution
- Step 1: Write the proportion equation
87,084.09 : 120,187.16 = 51,277.42 : x - Step 2: Convert to fraction form
87,084.09/120,187.16 = 51,277.42/x - Step 3: Cross multiply
87,084.09x = 120,187.16 × 51,277.42 - Step 4: Simplify right side
87,084.09x = 6,162,887,481.93 - Step 5: Solve for x
x = 6,162,887,481.93/87,084.09 - Step 6: Final answer
x = 70,769.38
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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.