Finding the Fourth Proportional to 81,678.18, 122,521.86 and 29,087.66
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Solution
The fourth proportional to 81,678.18, 122,521.86 and 29,087.66 is: 43,633.12
Step by Step Solution
- Step 1: Write the proportion equation
81,678.18 : 122,521.86 = 29,087.66 : x - Step 2: Convert to fraction form
81,678.18/122,521.86 = 29,087.66/x - Step 3: Cross multiply
81,678.18x = 122,521.86 × 29,087.66 - Step 4: Simplify right side
81,678.18x = 3,563,874,206.25 - Step 5: Solve for x
x = 3,563,874,206.25/81,678.18 - Step 6: Final answer
x = 43,633.12
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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.