Finding the Fourth Proportional to 98,268.48, 135,559.68 and 66,448.80
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Solution
The fourth proportional to 98,268.48, 135,559.68 and 66,448.80 is: 91,664.98
Step by Step Solution
- Step 1: Write the proportion equation
98,268.48 : 135,559.68 = 66,448.80 : x - Step 2: Convert to fraction form
98,268.48/135,559.68 = 66,448.80/x - Step 3: Cross multiply
98,268.48x = 135,559.68 × 66,448.80 - Step 4: Simplify right side
98,268.48x = 9,007,778,064.38 - Step 5: Solve for x
x = 9,007,778,064.38/98,268.48 - Step 6: Final answer
x = 91,664.98
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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.