Finding the Fourth Proportional to 72,220.96, 108,331.12 and 19,630.28
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Solution
The fourth proportional to 72,220.96, 108,331.12 and 19,630.28 is: 29,445.33
Step by Step Solution
- Step 1: Write the proportion equation
72,220.96 : 108,331.12 = 19,630.28 : x - Step 2: Convert to fraction form
72,220.96/108,331.12 = 19,630.28/x - Step 3: Cross multiply
72,220.96x = 108,331.12 × 19,630.28 - Step 4: Simplify right side
72,220.96x = 2,126,570,218.31 - Step 5: Solve for x
x = 2,126,570,218.31/72,220.96 - Step 6: Final answer
x = 29,445.33
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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.