Finding the Fourth Proportional to 75,414.24, 103,980.24 and 65,186.82
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Solution
The fourth proportional to 75,414.24, 103,980.24 and 65,186.82 is: 89,878.80
Step by Step Solution
- Step 1: Write the proportion equation
75,414.24 : 103,980.24 = 65,186.82 : x - Step 2: Convert to fraction form
75,414.24/103,980.24 = 65,186.82/x - Step 3: Cross multiply
75,414.24x = 103,980.24 × 65,186.82 - Step 4: Simplify right side
75,414.24x = 6,778,141,188.44 - Step 5: Solve for x
x = 6,778,141,188.44/75,414.24 - Step 6: Final answer
x = 89,878.80
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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.