Finding the Fourth Proportional to 85,543.21, 128,306.56 and 26,362.99
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Solution
The fourth proportional to 85,543.21, 128,306.56 and 26,362.99 is: 39,541.94
Step by Step Solution
- Step 1: Write the proportion equation
85,543.21 : 128,306.56 = 26,362.99 : x - Step 2: Convert to fraction form
85,543.21/128,306.56 = 26,362.99/x - Step 3: Cross multiply
85,543.21x = 128,306.56 × 26,362.99 - Step 4: Simplify right side
85,543.21x = 3,382,544,558.21 - Step 5: Solve for x
x = 3,382,544,558.21/85,543.21 - Step 6: Final answer
x = 39,541.94
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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.