Finding the Fourth Proportional to 81,142.68, 121,712.67 and 27,871.68
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Solution
The fourth proportional to 81,142.68, 121,712.67 and 27,871.68 is: 41,807.06
Step by Step Solution
- Step 1: Write the proportion equation
81,142.68 : 121,712.67 = 27,871.68 : x - Step 2: Convert to fraction form
81,142.68/121,712.67 = 27,871.68/x - Step 3: Cross multiply
81,142.68x = 121,712.67 × 27,871.68 - Step 4: Simplify right side
81,142.68x = 3,392,336,590.19 - Step 5: Solve for x
x = 3,392,336,590.19/81,142.68 - Step 6: Final answer
x = 41,807.06
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.