Finding the Fourth Proportional to 85,826.30, 128,707.86 and 29,651.99
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Solution
The fourth proportional to 85,826.30, 128,707.86 and 29,651.99 is: 44,467.07
Step by Step Solution
- Step 1: Write the proportion equation
85,826.30 : 128,707.86 = 29,651.99 : x - Step 2: Convert to fraction form
85,826.30/128,707.86 = 29,651.99/x - Step 3: Cross multiply
85,826.30x = 128,707.86 × 29,651.99 - Step 4: Simplify right side
85,826.30x = 3,816,444,177.64 - Step 5: Solve for x
x = 3,816,444,177.64/85,826.30 - Step 6: Final answer
x = 44,467.07
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1.5x scale
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.