Finding the Fourth Proportional to 73,023.70, 100,772.64 and 39,489.70
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Solution
The fourth proportional to 73,023.70, 100,772.64 and 39,489.70 is: 54,495.75
Step by Step Solution
- Step 1: Write the proportion equation
73,023.70 : 100,772.64 = 39,489.70 : x - Step 2: Convert to fraction form
73,023.70/100,772.64 = 39,489.70/x - Step 3: Cross multiply
73,023.70x = 100,772.64 × 39,489.70 - Step 4: Simplify right side
73,023.70x = 3,979,481,321.81 - Step 5: Solve for x
x = 3,979,481,321.81/73,023.70 - Step 6: Final answer
x = 54,495.75
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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.