Finding the Fourth Proportional to 85,441.98, 128,165.06 and 26,278.09
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Solution
The fourth proportional to 85,441.98, 128,165.06 and 26,278.09 is: 39,417.78
Step by Step Solution
- Step 1: Write the proportion equation
85,441.98 : 128,165.06 = 26,278.09 : x - Step 2: Convert to fraction form
85,441.98/128,165.06 = 26,278.09/x - Step 3: Cross multiply
85,441.98x = 128,165.06 × 26,278.09 - Step 4: Simplify right side
85,441.98x = 3,367,932,981.54 - Step 5: Solve for x
x = 3,367,932,981.54/85,441.98 - Step 6: Final answer
x = 39,417.78
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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.