Finding the Fourth Proportional to 91,237.91, 125,728.91 and 69,751.92
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Solution
The fourth proportional to 91,237.91, 125,728.91 and 69,751.92 is: 96,120.49
Step by Step Solution
- Step 1: Write the proportion equation
91,237.91 : 125,728.91 = 69,751.92 : x - Step 2: Convert to fraction form
91,237.91/125,728.91 = 69,751.92/x - Step 3: Cross multiply
91,237.91x = 125,728.91 × 69,751.92 - Step 4: Simplify right side
91,237.91x = 8,769,832,549.08 - Step 5: Solve for x
x = 8,769,832,549.08/91,237.91 - Step 6: Final answer
x = 96,120.49
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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.