Finding the Fourth Proportional to 70,816.26, 106,171.32 and 42,729.68
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Solution
The fourth proportional to 70,816.26, 106,171.32 and 42,729.68 is: 64,062.50
Step by Step Solution
- Step 1: Write the proportion equation
70,816.26 : 106,171.32 = 42,729.68 : x - Step 2: Convert to fraction form
70,816.26/106,171.32 = 42,729.68/x - Step 3: Cross multiply
70,816.26x = 106,171.32 × 42,729.68 - Step 4: Simplify right side
70,816.26x = 4,536,666,357.23 - Step 5: Solve for x
x = 4,536,666,357.23/70,816.26 - Step 6: Final answer
x = 64,062.50
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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.