Finding the Fourth Proportional to 86,640.51, 129,965.36 and 24,315.87
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Solution
The fourth proportional to 86,640.51, 129,965.36 and 24,315.87 is: 36,475.09
Step by Step Solution
- Step 1: Write the proportion equation
86,640.51 : 129,965.36 = 24,315.87 : x - Step 2: Convert to fraction form
86,640.51/129,965.36 = 24,315.87/x - Step 3: Cross multiply
86,640.51x = 129,965.36 × 24,315.87 - Step 4: Simplify right side
86,640.51x = 3,160,220,676.68 - Step 5: Solve for x
x = 3,160,220,676.68/86,640.51 - Step 6: Final answer
x = 36,475.09
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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.