Finding the Fourth Proportional to 87,612.93, 120,915.36 and 53,644.32
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Solution
The fourth proportional to 87,612.93, 120,915.36 and 53,644.32 is: 74,034.99
Step by Step Solution
- Step 1: Write the proportion equation
87,612.93 : 120,915.36 = 53,644.32 : x - Step 2: Convert to fraction form
87,612.93/120,915.36 = 53,644.32/x - Step 3: Cross multiply
87,612.93x = 120,915.36 × 53,644.32 - Step 4: Simplify right side
87,612.93x = 6,486,422,264.76 - Step 5: Solve for x
x = 6,486,422,264.76/87,612.93 - Step 6: Final answer
x = 74,034.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.