Finding the Fourth Proportional to 79,078.42, 109,124.84 and 48,442.20
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Solution
The fourth proportional to 79,078.42, 109,124.84 and 48,442.20 is: 66,848.17
Step by Step Solution
- Step 1: Write the proportion equation
79,078.42 : 109,124.84 = 48,442.20 : x - Step 2: Convert to fraction form
79,078.42/109,124.84 = 48,442.20/x - Step 3: Cross multiply
79,078.42x = 109,124.84 × 48,442.20 - Step 4: Simplify right side
79,078.42x = 5,286,247,324.25 - Step 5: Solve for x
x = 5,286,247,324.25/79,078.42 - Step 6: Final answer
x = 66,848.17
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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.