Finding the Fourth Proportional to 83,410.80, 125,116.20 and 74,425.20
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Solution
The fourth proportional to 83,410.80, 125,116.20 and 74,425.20 is: 111,637.80
Step by Step Solution
- Step 1: Write the proportion equation
83,410.80 : 125,116.20 = 74,425.20 : x - Step 2: Convert to fraction form
83,410.80/125,116.20 = 74,425.20/x - Step 3: Cross multiply
83,410.80x = 125,116.20 × 74,425.20 - Step 4: Simplify right side
83,410.80x = 9,311,798,208.24 - Step 5: Solve for x
x = 9,311,798,208.24/83,410.80 - Step 6: Final answer
x = 111,637.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.