Finding the Fourth Proportional to 81,435.21, 122,133.15 and 34,024.68
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Solution
The fourth proportional to 81,435.21, 122,133.15 and 34,024.68 is: 51,028.80
Step by Step Solution
- Step 1: Write the proportion equation
81,435.21 : 122,133.15 = 34,024.68 : x - Step 2: Convert to fraction form
81,435.21/122,133.15 = 34,024.68/x - Step 3: Cross multiply
81,435.21x = 122,133.15 × 34,024.68 - Step 4: Simplify right side
81,435.21x = 4,155,541,346.14 - Step 5: Solve for x
x = 4,155,541,346.14/81,435.21 - Step 6: Final answer
x = 51,028.80
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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.