Finding the Fourth Proportional to 83,626.88, 115,390.20 and 47,328.15
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Solution
The fourth proportional to 83,626.88, 115,390.20 and 47,328.15 is: 65,304.42
Step by Step Solution
- Step 1: Write the proportion equation
83,626.88 : 115,390.20 = 47,328.15 : x - Step 2: Convert to fraction form
83,626.88/115,390.20 = 47,328.15/x - Step 3: Cross multiply
83,626.88x = 115,390.20 × 47,328.15 - Step 4: Simplify right side
83,626.88x = 5,461,204,694.13 - Step 5: Solve for x
x = 5,461,204,694.13/83,626.88 - Step 6: Final answer
x = 65,304.42
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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.