Finding the Fourth Proportional to 111,591.09, 153,996.80 and 61,290.09
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Solution
The fourth proportional to 111,591.09, 153,996.80 and 61,290.09 is: 84,580.92
Step by Step Solution
- Step 1: Write the proportion equation
111,591.09 : 153,996.80 = 61,290.09 : x - Step 2: Convert to fraction form
111,591.09/153,996.80 = 61,290.09/x - Step 3: Cross multiply
111,591.09x = 153,996.80 × 61,290.09 - Step 4: Simplify right side
111,591.09x = 9,438,477,425.26 - Step 5: Solve for x
x = 9,438,477,425.26/111,591.09 - Step 6: Final answer
x = 84,580.92
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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.