Finding the Fourth Proportional to 79,291.20, 109,423.36 and 43,479.08
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Solution
The fourth proportional to 79,291.20, 109,423.36 and 43,479.08 is: 60,001.95
Step by Step Solution
- Step 1: Write the proportion equation
79,291.20 : 109,423.36 = 43,479.08 : x - Step 2: Convert to fraction form
79,291.20/109,423.36 = 43,479.08/x - Step 3: Cross multiply
79,291.20x = 109,423.36 × 43,479.08 - Step 4: Simplify right side
79,291.20x = 4,757,626,258.80 - Step 5: Solve for x
x = 4,757,626,258.80/79,291.20 - Step 6: Final answer
x = 60,001.95
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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.