Finding the Fourth Proportional to 84,640.69, 126,959.86 and 20,599.08
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Solution
The fourth proportional to 84,640.69, 126,959.86 and 20,599.08 is: 30,898.33
Step by Step Solution
- Step 1: Write the proportion equation
84,640.69 : 126,959.86 = 20,599.08 : x - Step 2: Convert to fraction form
84,640.69/126,959.86 = 20,599.08/x - Step 3: Cross multiply
84,640.69x = 126,959.86 × 20,599.08 - Step 4: Simplify right side
84,640.69x = 2,615,256,312.93 - Step 5: Solve for x
x = 2,615,256,312.93/84,640.69 - Step 6: Final answer
x = 30,898.33
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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.