Finding the Fourth Proportional to 91,509.12, 126,276.75 and 51,216.08
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Solution
The fourth proportional to 91,509.12, 126,276.75 and 51,216.08 is: 70,674.92
Step by Step Solution
- Step 1: Write the proportion equation
91,509.12 : 126,276.75 = 51,216.08 : x - Step 2: Convert to fraction form
91,509.12/126,276.75 = 51,216.08/x - Step 3: Cross multiply
91,509.12x = 126,276.75 × 51,216.08 - Step 4: Simplify right side
91,509.12x = 6,467,399,498.76 - Step 5: Solve for x
x = 6,467,399,498.76/91,509.12 - Step 6: Final answer
x = 70,674.92
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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.