Finding the Fourth Proportional to 81,669.06, 122,511.30 and 31,752.99
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Solution
The fourth proportional to 81,669.06, 122,511.30 and 31,752.99 is: 47,632.48
Step by Step Solution
- Step 1: Write the proportion equation
81,669.06 : 122,511.30 = 31,752.99 : x - Step 2: Convert to fraction form
81,669.06/122,511.30 = 31,752.99/x - Step 3: Cross multiply
81,669.06x = 122,511.30 × 31,752.99 - Step 4: Simplify right side
81,669.06x = 3,890,100,083.79 - Step 5: Solve for x
x = 3,890,100,083.79/81,669.06 - Step 6: Final answer
x = 47,632.48
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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.