Finding the Fourth Proportional to 75,431.02, 113,194.17 and 42,172.90
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Solution
The fourth proportional to 75,431.02, 113,194.17 and 42,172.90 is: 63,285.99
Step by Step Solution
- Step 1: Write the proportion equation
75,431.02 : 113,194.17 = 42,172.90 : x - Step 2: Convert to fraction form
75,431.02/113,194.17 = 42,172.90/x - Step 3: Cross multiply
75,431.02x = 113,194.17 × 42,172.90 - Step 4: Simplify right side
75,431.02x = 4,773,726,411.99 - Step 5: Solve for x
x = 4,773,726,411.99/75,431.02 - Step 6: Final answer
x = 63,285.99
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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.