Finding the Fourth Proportional to 75,878.97, 113,830.80 and 28,497.75
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Solution
The fourth proportional to 75,878.97, 113,830.80 and 28,497.75 is: 42,751.26
Step by Step Solution
- Step 1: Write the proportion equation
75,878.97 : 113,830.80 = 28,497.75 : x - Step 2: Convert to fraction form
75,878.97/113,830.80 = 28,497.75/x - Step 3: Cross multiply
75,878.97x = 113,830.80 × 28,497.75 - Step 4: Simplify right side
75,878.97x = 3,243,921,680.70 - Step 5: Solve for x
x = 3,243,921,680.70/75,878.97 - Step 6: Final answer
x = 42,751.26
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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.