Finding the Fourth Proportional to 77,343.18, 106,733.79 and 43,809.18
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Solution
The fourth proportional to 77,343.18, 106,733.79 and 43,809.18 is: 60,456.78
Step by Step Solution
- Step 1: Write the proportion equation
77,343.18 : 106,733.79 = 43,809.18 : x - Step 2: Convert to fraction form
77,343.18/106,733.79 = 43,809.18/x - Step 3: Cross multiply
77,343.18x = 106,733.79 × 43,809.18 - Step 4: Simplify right side
77,343.18x = 4,675,919,818.19 - Step 5: Solve for x
x = 4,675,919,818.19/77,343.18 - Step 6: Final answer
x = 60,456.78
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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.