Finding the Fourth Proportional to 77,043.36, 115,601.67 and 53,387.31
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Solution
The fourth proportional to 77,043.36, 115,601.67 and 53,387.31 is: 80,106.35
Step by Step Solution
- Step 1: Write the proportion equation
77,043.36 : 115,601.67 = 53,387.31 : x - Step 2: Convert to fraction form
77,043.36/115,601.67 = 53,387.31/x - Step 3: Cross multiply
77,043.36x = 115,601.67 × 53,387.31 - Step 4: Simplify right side
77,043.36x = 6,171,662,192.81 - Step 5: Solve for x
x = 6,171,662,192.81/77,043.36 - Step 6: Final answer
x = 80,106.35
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1.5x scale
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.