Finding the Fourth Proportional to 81,757.65, 122,683.77 and 34,368.99
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Solution
The fourth proportional to 81,757.65, 122,683.77 and 34,368.99 is: 51,573.37
Step by Step Solution
- Step 1: Write the proportion equation
81,757.65 : 122,683.77 = 34,368.99 : x - Step 2: Convert to fraction form
81,757.65/122,683.77 = 34,368.99/x - Step 3: Cross multiply
81,757.65x = 122,683.77 × 34,368.99 - Step 4: Simplify right side
81,757.65x = 4,216,517,264.29 - Step 5: Solve for x
x = 4,216,517,264.29/81,757.65 - Step 6: Final answer
x = 51,573.37
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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.