Finding the Fourth Proportional to 74,745.20, 103,010.28 and 63,378.32
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Solution
The fourth proportional to 74,745.20, 103,010.28 and 63,378.32 is: 87,344.99
Step by Step Solution
- Step 1: Write the proportion equation
74,745.20 : 103,010.28 = 63,378.32 : x - Step 2: Convert to fraction form
74,745.20/103,010.28 = 63,378.32/x - Step 3: Cross multiply
74,745.20x = 103,010.28 × 63,378.32 - Step 4: Simplify right side
74,745.20x = 6,528,618,489.13 - Step 5: Solve for x
x = 6,528,618,489.13/74,745.20 - Step 6: Final answer
x = 87,344.99
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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.