Finding the Fourth Proportional to 98,441.80, 135,841.09 and 54,831.07
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Solution
The fourth proportional to 98,441.80, 135,841.09 and 54,831.07 is: 75,662.09
Step by Step Solution
- Step 1: Write the proportion equation
98,441.80 : 135,841.09 = 54,831.07 : x - Step 2: Convert to fraction form
98,441.80/135,841.09 = 54,831.07/x - Step 3: Cross multiply
98,441.80x = 135,841.09 × 54,831.07 - Step 4: Simplify right side
98,441.80x = 7,448,312,347.39 - Step 5: Solve for x
x = 7,448,312,347.39/98,441.80 - Step 6: Final answer
x = 75,662.09
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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.