Finding the Fourth Proportional to 86,455.98, 129,683.98 and 66,763.26
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Solution
The fourth proportional to 86,455.98, 129,683.98 and 66,763.26 is: 100,144.90
Step by Step Solution
- Step 1: Write the proportion equation
86,455.98 : 129,683.98 = 66,763.26 : x - Step 2: Convert to fraction form
86,455.98/129,683.98 = 66,763.26/x - Step 3: Cross multiply
86,455.98x = 129,683.98 × 66,763.26 - Step 4: Simplify right side
86,455.98x = 8,658,125,274.57 - Step 5: Solve for x
x = 8,658,125,274.57/86,455.98 - Step 6: Final answer
x = 100,144.90
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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.