Finding the Fourth Proportional to 86,146.81, 129,220.21 and 39,366.88
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Solution
The fourth proportional to 86,146.81, 129,220.21 and 39,366.88 is: 59,050.31
Step by Step Solution
- Step 1: Write the proportion equation
86,146.81 : 129,220.21 = 39,366.88 : x - Step 2: Convert to fraction form
86,146.81/129,220.21 = 39,366.88/x - Step 3: Cross multiply
86,146.81x = 129,220.21 × 39,366.88 - Step 4: Simplify right side
86,146.81x = 5,086,995,854.54 - Step 5: Solve for x
x = 5,086,995,854.54/86,146.81 - Step 6: Final answer
x = 59,050.31
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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.