Finding the Fourth Proportional to 86,675.20, 129,915.60 and 36,746.80
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Solution
The fourth proportional to 86,675.20, 129,915.60 and 36,746.80 is: 55,078.99
Step by Step Solution
- Step 1: Write the proportion equation
86,675.20 : 129,915.60 = 36,746.80 : x - Step 2: Convert to fraction form
86,675.20/129,915.60 = 36,746.80/x - Step 3: Cross multiply
86,675.20x = 129,915.60 × 36,746.80 - Step 4: Simplify right side
86,675.20x = 4,773,982,570.08 - Step 5: Solve for x
x = 4,773,982,570.08/86,675.20 - Step 6: Final answer
x = 55,078.99
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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.