Finding the Fourth Proportional to 75,998.53, 113,980.44 and 28,618.62
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Solution
The fourth proportional to 75,998.53, 113,980.44 and 28,618.62 is: 42,921.39
Step by Step Solution
- Step 1: Write the proportion equation
75,998.53 : 113,980.44 = 28,618.62 : x - Step 2: Convert to fraction form
75,998.53/113,980.44 = 28,618.62/x - Step 3: Cross multiply
75,998.53x = 113,980.44 × 28,618.62 - Step 4: Simplify right side
75,998.53x = 3,261,962,899.79 - Step 5: Solve for x
x = 3,261,962,899.79/75,998.53 - Step 6: Final answer
x = 42,921.39
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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.