Finding the Fourth Proportional to 91,638.99, 126,461.64 and 55,828.99
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Solution
The fourth proportional to 91,638.99, 126,461.64 and 55,828.99 is: 77,043.90
Step by Step Solution
- Step 1: Write the proportion equation
91,638.99 : 126,461.64 = 55,828.99 : x - Step 2: Convert to fraction form
91,638.99/126,461.64 = 55,828.99/x - Step 3: Cross multiply
91,638.99x = 126,461.64 × 55,828.99 - Step 4: Simplify right side
91,638.99x = 7,060,225,634.94 - Step 5: Solve for x
x = 7,060,225,634.94/91,638.99 - Step 6: Final answer
x = 77,043.90
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1.5x scale
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.