Finding the Fourth Proportional to 81,211.48, 121,812.36 and 22,045.84
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Solution
The fourth proportional to 81,211.48, 121,812.36 and 22,045.84 is: 33,067.44
Step by Step Solution
- Step 1: Write the proportion equation
81,211.48 : 121,812.36 = 22,045.84 : x - Step 2: Convert to fraction form
81,211.48/121,812.36 = 22,045.84/x - Step 3: Cross multiply
81,211.48x = 121,812.36 × 22,045.84 - Step 4: Simplify right side
81,211.48x = 2,685,455,411.38 - Step 5: Solve for x
x = 2,685,455,411.38/81,211.48 - Step 6: Final answer
x = 33,067.44
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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.