Finding the Fourth Proportional to 79,878.62, 110,153.76 and 61,967.08
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Solution
The fourth proportional to 79,878.62, 110,153.76 and 61,967.08 is: 85,453.49
Step by Step Solution
- Step 1: Write the proportion equation
79,878.62 : 110,153.76 = 61,967.08 : x - Step 2: Convert to fraction form
79,878.62/110,153.76 = 61,967.08/x - Step 3: Cross multiply
79,878.62x = 110,153.76 × 61,967.08 - Step 4: Simplify right side
79,878.62x = 6,825,906,858.22 - Step 5: Solve for x
x = 6,825,906,858.22/79,878.62 - Step 6: Final answer
x = 85,453.49
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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.