Finding the Fourth Proportional to 73,107.80, 109,661.70 and 65,331.80
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Solution
The fourth proportional to 73,107.80, 109,661.70 and 65,331.80 is: 97,997.70
Step by Step Solution
- Step 1: Write the proportion equation
73,107.80 : 109,661.70 = 65,331.80 : x - Step 2: Convert to fraction form
73,107.80/109,661.70 = 65,331.80/x - Step 3: Cross multiply
73,107.80x = 109,661.70 × 65,331.80 - Step 4: Simplify right side
73,107.80x = 7,164,396,252.06 - Step 5: Solve for x
x = 7,164,396,252.06/73,107.80 - Step 6: Final answer
x = 97,997.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.