Finding the Fourth Proportional to 81,932.13, 122,985.68 and 35,217.81
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Solution
The fourth proportional to 81,932.13, 122,985.68 and 35,217.81 is: 52,864.32
Step by Step Solution
- Step 1: Write the proportion equation
81,932.13 : 122,985.68 = 35,217.81 : x - Step 2: Convert to fraction form
81,932.13/122,985.68 = 35,217.81/x - Step 3: Cross multiply
81,932.13x = 122,985.68 × 35,217.81 - Step 4: Simplify right side
81,932.13x = 4,331,286,134.87 - Step 5: Solve for x
x = 4,331,286,134.87/81,932.13 - Step 6: Final answer
x = 52,864.32
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1.5x scale
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.