Finding the Fourth Proportional to 102,724.64, 141,757.27 and 57,402.99
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Solution
The fourth proportional to 102,724.64, 141,757.27 and 57,402.99 is: 79,214.60
Step by Step Solution
- Step 1: Write the proportion equation
102,724.64 : 141,757.27 = 57,402.99 : x - Step 2: Convert to fraction form
102,724.64/141,757.27 = 57,402.99/x - Step 3: Cross multiply
102,724.64x = 141,757.27 × 57,402.99 - Step 4: Simplify right side
102,724.64x = 8,137,291,152.24 - Step 5: Solve for x
x = 8,137,291,152.24/102,724.64 - Step 6: Final answer
x = 79,214.60
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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.