Finding the Fourth Proportional to 83,817.48, 115,639.81 and 47,515.03
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Solution
The fourth proportional to 83,817.48, 115,639.81 and 47,515.03 is: 65,554.69
Step by Step Solution
- Step 1: Write the proportion equation
83,817.48 : 115,639.81 = 47,515.03 : x - Step 2: Convert to fraction form
83,817.48/115,639.81 = 47,515.03/x - Step 3: Cross multiply
83,817.48x = 115,639.81 × 47,515.03 - Step 4: Simplify right side
83,817.48x = 5,494,629,041.34 - Step 5: Solve for x
x = 5,494,629,041.34/83,817.48 - Step 6: Final answer
x = 65,554.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.