Finding the Fourth Proportional to 81,609.68, 112,599.78 and 49,776.68
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Solution
The fourth proportional to 81,609.68, 112,599.78 and 49,776.68 is: 68,678.66
Step by Step Solution
- Step 1: Write the proportion equation
81,609.68 : 112,599.78 = 49,776.68 : x - Step 2: Convert to fraction form
81,609.68/112,599.78 = 49,776.68/x - Step 3: Cross multiply
81,609.68x = 112,599.78 × 49,776.68 - Step 4: Simplify right side
81,609.68x = 5,604,843,217.13 - Step 5: Solve for x
x = 5,604,843,217.13/81,609.68 - Step 6: Final answer
x = 68,678.66
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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.