Finding the Fourth Proportional to 105,078.06, 145,007.21 and 57,330.99
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Solution
The fourth proportional to 105,078.06, 145,007.21 and 57,330.99 is: 79,116.49
Step by Step Solution
- Step 1: Write the proportion equation
105,078.06 : 145,007.21 = 57,330.99 : x - Step 2: Convert to fraction form
105,078.06/145,007.21 = 57,330.99/x - Step 3: Cross multiply
105,078.06x = 145,007.21 × 57,330.99 - Step 4: Simplify right side
105,078.06x = 8,313,407,049.77 - Step 5: Solve for x
x = 8,313,407,049.77/105,078.06 - Step 6: Final answer
x = 79,116.49
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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.