Finding the Fourth Proportional to 77,161.08, 106,481.80 and 43,169.40
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Solution
The fourth proportional to 77,161.08, 106,481.80 and 43,169.40 is: 59,573.50
Step by Step Solution
- Step 1: Write the proportion equation
77,161.08 : 106,481.80 = 43,169.40 : x - Step 2: Convert to fraction form
77,161.08/106,481.80 = 43,169.40/x - Step 3: Cross multiply
77,161.08x = 106,481.80 × 43,169.40 - Step 4: Simplify right side
77,161.08x = 4,596,755,416.92 - Step 5: Solve for x
x = 4,596,755,416.92/77,161.08 - Step 6: Final answer
x = 59,573.50
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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.