Finding the Fourth Proportional to 99,621.97, 149,457.86 and 28,550.54
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Solution
The fourth proportional to 99,621.97, 149,457.86 and 28,550.54 is: 42,832.95
Step by Step Solution
- Step 1: Write the proportion equation
99,621.97 : 149,457.86 = 28,550.54 : x - Step 2: Convert to fraction form
99,621.97/149,457.86 = 28,550.54/x - Step 3: Cross multiply
99,621.97x = 149,457.86 × 28,550.54 - Step 4: Simplify right side
99,621.97x = 4,267,102,948.20 - Step 5: Solve for x
x = 4,267,102,948.20/99,621.97 - Step 6: Final answer
x = 42,832.95
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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.