Finding the Fourth Proportional to 72,600.84, 100,189.17 and 40,779.99
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Solution
The fourth proportional to 72,600.84, 100,189.17 and 40,779.99 is: 56,276.39
Step by Step Solution
- Step 1: Write the proportion equation
72,600.84 : 100,189.17 = 40,779.99 : x - Step 2: Convert to fraction form
72,600.84/100,189.17 = 40,779.99/x - Step 3: Cross multiply
72,600.84x = 100,189.17 × 40,779.99 - Step 4: Simplify right side
72,600.84x = 4,085,713,350.71 - Step 5: Solve for x
x = 4,085,713,350.71/72,600.84 - Step 6: Final answer
x = 56,276.39
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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.