Finding the Fourth Proportional to 115,327.80, 172,991.70 and 32,221.80
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Solution
The fourth proportional to 115,327.80, 172,991.70 and 32,221.80 is: 48,332.70
Step by Step Solution
- Step 1: Write the proportion equation
115,327.80 : 172,991.70 = 32,221.80 : x - Step 2: Convert to fraction form
115,327.80/172,991.70 = 32,221.80/x - Step 3: Cross multiply
115,327.80x = 172,991.70 × 32,221.80 - Step 4: Simplify right side
115,327.80x = 5,574,103,959.06 - Step 5: Solve for x
x = 5,574,103,959.06/115,327.80 - Step 6: Final answer
x = 48,332.70
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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.