Finding the Fourth Proportional to 81,991.31, 122,987.10 and 22,826.99
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Solution
The fourth proportional to 81,991.31, 122,987.10 and 22,826.99 is: 34,240.52
Step by Step Solution
- Step 1: Write the proportion equation
81,991.31 : 122,987.10 = 22,826.99 : x - Step 2: Convert to fraction form
81,991.31/122,987.10 = 22,826.99/x - Step 3: Cross multiply
81,991.31x = 122,987.10 × 22,826.99 - Step 4: Simplify right side
81,991.31x = 2,807,424,686.89 - Step 5: Solve for x
x = 2,807,424,686.89/81,991.31 - Step 6: Final answer
x = 34,240.52
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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.