Finding the Fourth Proportional to 91,288.08, 125,908.14 and 78,562.44
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Solution
The fourth proportional to 91,288.08, 125,908.14 and 78,562.44 is: 108,356.43
Step by Step Solution
- Step 1: Write the proportion equation
91,288.08 : 125,908.14 = 78,562.44 : x - Step 2: Convert to fraction form
91,288.08/125,908.14 = 78,562.44/x - Step 3: Cross multiply
91,288.08x = 125,908.14 × 78,562.44 - Step 4: Simplify right side
91,288.08x = 9,891,650,694.26 - Step 5: Solve for x
x = 9,891,650,694.26/91,288.08 - Step 6: Final answer
x = 108,356.43
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.