Finding the Fourth Proportional to 75,079.96, 112,618.62 and 18,918.82
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Solution
The fourth proportional to 75,079.96, 112,618.62 and 18,918.82 is: 28,377.89
Step by Step Solution
- Step 1: Write the proportion equation
75,079.96 : 112,618.62 = 18,918.82 : x - Step 2: Convert to fraction form
75,079.96/112,618.62 = 18,918.82/x - Step 3: Cross multiply
75,079.96x = 112,618.62 × 18,918.82 - Step 4: Simplify right side
75,079.96x = 2,130,610,907.72 - Step 5: Solve for x
x = 2,130,610,907.72/75,079.96 - Step 6: Final answer
x = 28,377.89
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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.