Finding the Fourth Proportional to 85,405.05, 128,107.76 and 26,240.31
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Solution
The fourth proportional to 85,405.05, 128,107.76 and 26,240.31 is: 39,360.52
Step by Step Solution
- Step 1: Write the proportion equation
85,405.05 : 128,107.76 = 26,240.31 : x - Step 2: Convert to fraction form
85,405.05/128,107.76 = 26,240.31/x - Step 3: Cross multiply
85,405.05x = 128,107.76 × 26,240.31 - Step 4: Simplify right side
85,405.05x = 3,361,587,204.60 - Step 5: Solve for x
x = 3,361,587,204.60/85,405.05 - Step 6: Final answer
x = 39,360.52
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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.