Finding the Fourth Proportional to 80,386.68, 110,699.64 and 75,252.12
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Solution
The fourth proportional to 80,386.68, 110,699.64 and 75,252.12 is: 103,628.89
Step by Step Solution
- Step 1: Write the proportion equation
80,386.68 : 110,699.64 = 75,252.12 : x - Step 2: Convert to fraction form
80,386.68/110,699.64 = 75,252.12/x - Step 3: Cross multiply
80,386.68x = 110,699.64 × 75,252.12 - Step 4: Simplify right side
80,386.68x = 8,330,382,593.24 - Step 5: Solve for x
x = 8,330,382,593.24/80,386.68 - Step 6: Final answer
x = 103,628.89
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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.