Finding the Fourth Proportional to 84,239.49, 126,358.73 and 21,059.31
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Solution
The fourth proportional to 84,239.49, 126,358.73 and 21,059.31 is: 31,588.84
Step by Step Solution
- Step 1: Write the proportion equation
84,239.49 : 126,358.73 = 21,059.31 : x - Step 2: Convert to fraction form
84,239.49/126,358.73 = 21,059.31/x - Step 3: Cross multiply
84,239.49x = 126,358.73 × 21,059.31 - Step 4: Simplify right side
84,239.49x = 2,661,027,560.98 - Step 5: Solve for x
x = 2,661,027,560.98/84,239.49 - Step 6: Final answer
x = 31,588.84
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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.