Finding the Fourth Proportional to 98,362.62, 135,740.07 and 55,921.14
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Solution
The fourth proportional to 98,362.62, 135,740.07 and 55,921.14 is: 77,170.98
Step by Step Solution
- Step 1: Write the proportion equation
98,362.62 : 135,740.07 = 55,921.14 : x - Step 2: Convert to fraction form
98,362.62/135,740.07 = 55,921.14/x - Step 3: Cross multiply
98,362.62x = 135,740.07 × 55,921.14 - Step 4: Simplify right side
98,362.62x = 7,590,739,458.08 - Step 5: Solve for x
x = 7,590,739,458.08/98,362.62 - Step 6: Final answer
x = 77,170.98
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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.