Finding the Fourth Proportional to 85,718.98, 128,586.92 and 29,551.68
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Solution
The fourth proportional to 85,718.98, 128,586.92 and 29,551.68 is: 44,330.43
Step by Step Solution
- Step 1: Write the proportion equation
85,718.98 : 128,586.92 = 29,551.68 : x - Step 2: Convert to fraction form
85,718.98/128,586.92 = 29,551.68/x - Step 3: Cross multiply
85,718.98x = 128,586.92 × 29,551.68 - Step 4: Simplify right side
85,718.98x = 3,799,959,512.03 - Step 5: Solve for x
x = 3,799,959,512.03/85,718.98 - Step 6: Final answer
x = 44,330.43
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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.