Finding the Fourth Proportional to 98,711.09, 136,221.29 and 53,389.06
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Solution
The fourth proportional to 98,711.09, 136,221.29 and 53,389.06 is: 73,676.90
Step by Step Solution
- Step 1: Write the proportion equation
98,711.09 : 136,221.29 = 53,389.06 : x - Step 2: Convert to fraction form
98,711.09/136,221.29 = 53,389.06/x - Step 3: Cross multiply
98,711.09x = 136,221.29 × 53,389.06 - Step 4: Simplify right side
98,711.09x = 7,272,726,625.09 - Step 5: Solve for x
x = 7,272,726,625.09/98,711.09 - Step 6: Final answer
x = 73,676.90
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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.