Finding the Fourth Proportional to 91,967.99, 126,911.72 and 53,731.08
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Solution
The fourth proportional to 91,967.99, 126,911.72 and 53,731.08 is: 74,146.50
Step by Step Solution
- Step 1: Write the proportion equation
91,967.99 : 126,911.72 = 53,731.08 : x - Step 2: Convert to fraction form
91,967.99/126,911.72 = 53,731.08/x - Step 3: Cross multiply
91,967.99x = 126,911.72 × 53,731.08 - Step 4: Simplify right side
91,967.99x = 6,819,103,914.59 - Step 5: Solve for x
x = 6,819,103,914.59/91,967.99 - Step 6: Final answer
x = 74,146.50
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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.