Finding the Fourth Proportional to 89,109.26, 133,345.41 and 77,400.99
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Solution
The fourth proportional to 89,109.26, 133,345.41 and 77,400.99 is: 115,824.85
Step by Step Solution
- Step 1: Write the proportion equation
89,109.26 : 133,345.41 = 77,400.99 : x - Step 2: Convert to fraction form
89,109.26/133,345.41 = 77,400.99/x - Step 3: Cross multiply
89,109.26x = 133,345.41 × 77,400.99 - Step 4: Simplify right side
89,109.26x = 10,321,066,745.96 - Step 5: Solve for x
x = 10,321,066,745.96/89,109.26 - Step 6: Final answer
x = 115,824.85
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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.