Finding the Fourth Proportional to 145,857.13, 218,785.70 and 47,361.13
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Solution
The fourth proportional to 145,857.13, 218,785.70 and 47,361.13 is: 71,041.70
Step by Step Solution
- Step 1: Write the proportion equation
145,857.13 : 218,785.70 = 47,361.13 : x - Step 2: Convert to fraction form
145,857.13/218,785.70 = 47,361.13/x - Step 3: Cross multiply
145,857.13x = 218,785.70 × 47,361.13 - Step 4: Simplify right side
145,857.13x = 10,361,937,979.84 - Step 5: Solve for x
x = 10,361,937,979.84/145,857.13 - Step 6: Final answer
x = 71,041.70
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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.