Finding the Fourth Proportional to 72,624.40, 108,905.63 and 27,638.08
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Solution
The fourth proportional to 72,624.40, 108,905.63 and 27,638.08 is: 41,445.33
Step by Step Solution
- Step 1: Write the proportion equation
72,624.40 : 108,905.63 = 27,638.08 : x - Step 2: Convert to fraction form
72,624.40/108,905.63 = 27,638.08/x - Step 3: Cross multiply
72,624.40x = 108,905.63 × 27,638.08 - Step 4: Simplify right side
72,624.40x = 3,009,941,969.86 - Step 5: Solve for x
x = 3,009,941,969.86/72,624.40 - Step 6: Final answer
x = 41,445.33
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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.