Finding the Fourth Proportional to 86,706.41, 129,732.57 and 51,187.05
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Solution
The fourth proportional to 86,706.41, 129,732.57 and 51,187.05 is: 76,587.50
Step by Step Solution
- Step 1: Write the proportion equation
86,706.41 : 129,732.57 = 51,187.05 : x - Step 2: Convert to fraction form
86,706.41/129,732.57 = 51,187.05/x - Step 3: Cross multiply
86,706.41x = 129,732.57 × 51,187.05 - Step 4: Simplify right side
86,706.41x = 6,640,627,547.22 - Step 5: Solve for x
x = 6,640,627,547.22/86,706.41 - Step 6: Final answer
x = 76,587.50
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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.