Finding the Fourth Proportional to 90,915.12, 125,497.08 and 53,201.52
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Solution
The fourth proportional to 90,915.12, 125,497.08 and 53,201.52 is: 73,438.12
Step by Step Solution
- Step 1: Write the proportion equation
90,915.12 : 125,497.08 = 53,201.52 : x - Step 2: Convert to fraction form
90,915.12/125,497.08 = 53,201.52/x - Step 3: Cross multiply
90,915.12x = 125,497.08 × 53,201.52 - Step 4: Simplify right side
90,915.12x = 6,676,635,411.56 - Step 5: Solve for x
x = 6,676,635,411.56/90,915.12 - Step 6: Final answer
x = 73,438.12
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1.5x scale
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.