Finding the Fourth Proportional to 85,419.43, 128,141.39 and 26,260.07
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Solution
The fourth proportional to 85,419.43, 128,141.39 and 26,260.07 is: 39,393.86
Step by Step Solution
- Step 1: Write the proportion equation
85,419.43 : 128,141.39 = 26,260.07 : x - Step 2: Convert to fraction form
85,419.43/128,141.39 = 26,260.07/x - Step 3: Cross multiply
85,419.43x = 128,141.39 × 26,260.07 - Step 4: Simplify right side
85,419.43x = 3,365,001,296.24 - Step 5: Solve for x
x = 3,365,001,296.24/85,419.43 - Step 6: Final answer
x = 39,393.86
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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.