Finding the Fourth Proportional to 79,116.57, 109,178.19 and 43,305.84
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Solution
The fourth proportional to 79,116.57, 109,178.19 and 43,305.84 is: 59,760.59
Step by Step Solution
- Step 1: Write the proportion equation
79,116.57 : 109,178.19 = 43,305.84 : x - Step 2: Convert to fraction form
79,116.57/109,178.19 = 43,305.84/x - Step 3: Cross multiply
79,116.57x = 109,178.19 × 43,305.84 - Step 4: Simplify right side
79,116.57x = 4,728,053,227.63 - Step 5: Solve for x
x = 4,728,053,227.63/79,116.57 - Step 6: Final answer
x = 59,760.59
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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.