Finding the Fourth Proportional to 81,271.26, 112,159.30 and 45,463.68
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Solution
The fourth proportional to 81,271.26, 112,159.30 and 45,463.68 is: 62,742.65
Step by Step Solution
- Step 1: Write the proportion equation
81,271.26 : 112,159.30 = 45,463.68 : x - Step 2: Convert to fraction form
81,271.26/112,159.30 = 45,463.68/x - Step 3: Cross multiply
81,271.26x = 112,159.30 × 45,463.68 - Step 4: Simplify right side
81,271.26x = 5,099,174,524.22 - Step 5: Solve for x
x = 5,099,174,524.22/81,271.26 - Step 6: Final answer
x = 62,742.65
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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.