Finding the Fourth Proportional to 98,941.80, 136,539.38 and 53,621.08
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Solution
The fourth proportional to 98,941.80, 136,539.38 and 53,621.08 is: 73,996.93
Step by Step Solution
- Step 1: Write the proportion equation
98,941.80 : 136,539.38 = 53,621.08 : x - Step 2: Convert to fraction form
98,941.80/136,539.38 = 53,621.08/x - Step 3: Cross multiply
98,941.80x = 136,539.38 × 53,621.08 - Step 4: Simplify right side
98,941.80x = 7,321,389,018.13 - Step 5: Solve for x
x = 7,321,389,018.13/98,941.80 - Step 6: Final answer
x = 73,996.93
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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.