Finding the Fourth Proportional to 98,514.09, 135,949.60 and 56,072.63
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Solution
The fourth proportional to 98,514.09, 135,949.60 and 56,072.63 is: 77,380.31
Step by Step Solution
- Step 1: Write the proportion equation
98,514.09 : 135,949.60 = 56,072.63 : x - Step 2: Convert to fraction form
98,514.09/135,949.60 = 56,072.63/x - Step 3: Cross multiply
98,514.09x = 135,949.60 × 56,072.63 - Step 4: Simplify right side
98,514.09x = 7,623,051,009.79 - Step 5: Solve for x
x = 7,623,051,009.79/98,514.09 - Step 6: Final answer
x = 77,380.31
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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.