Finding the Fourth Proportional to 99,803.20, 149,574.80 and 40,569.68
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Solution
The fourth proportional to 99,803.20, 149,574.80 and 40,569.68 is: 60,801.68
Step by Step Solution
- Step 1: Write the proportion equation
99,803.20 : 149,574.80 = 40,569.68 : x - Step 2: Convert to fraction form
99,803.20/149,574.80 = 40,569.68/x - Step 3: Cross multiply
99,803.20x = 149,574.80 × 40,569.68 - Step 4: Simplify right side
99,803.20x = 6,068,201,772.06 - Step 5: Solve for x
x = 6,068,201,772.06/99,803.20 - Step 6: Final answer
x = 60,801.68
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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.