Finding the Fourth Proportional to 68,403.12, 102,620.48 and 21,655.99
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Solution
The fourth proportional to 68,403.12, 102,620.48 and 21,655.99 is: 32,488.99
Step by Step Solution
- Step 1: Write the proportion equation
68,403.12 : 102,620.48 = 21,655.99 : x - Step 2: Convert to fraction form
68,403.12/102,620.48 = 21,655.99/x - Step 3: Cross multiply
68,403.12x = 102,620.48 × 21,655.99 - Step 4: Simplify right side
68,403.12x = 2,222,348,088.68 - Step 5: Solve for x
x = 2,222,348,088.68/68,403.12 - Step 6: Final answer
x = 32,488.99
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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.