Finding the Fourth Proportional to 71,719.80, 107,579.70 and 67,345.80
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Solution
The fourth proportional to 71,719.80, 107,579.70 and 67,345.80 is: 101,018.70
Step by Step Solution
- Step 1: Write the proportion equation
71,719.80 : 107,579.70 = 67,345.80 : x - Step 2: Convert to fraction form
71,719.80/107,579.70 = 67,345.80/x - Step 3: Cross multiply
71,719.80x = 107,579.70 × 67,345.80 - Step 4: Simplify right side
71,719.80x = 7,245,040,960.26 - Step 5: Solve for x
x = 7,245,040,960.26/71,719.80 - Step 6: Final answer
x = 101,018.70
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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.