Finding the Fourth Proportional to 98,707.97, 136,218.11 and 53,386.85
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Solution
The fourth proportional to 98,707.97, 136,218.11 and 53,386.85 is: 73,674.45
Step by Step Solution
- Step 1: Write the proportion equation
98,707.97 : 136,218.11 = 53,386.85 : x - Step 2: Convert to fraction form
98,707.97/136,218.11 = 53,386.85/x - Step 3: Cross multiply
98,707.97x = 136,218.11 × 53,386.85 - Step 4: Simplify right side
98,707.97x = 7,272,255,879.46 - Step 5: Solve for x
x = 7,272,255,879.46/98,707.97 - Step 6: Final answer
x = 73,674.45
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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.