Finding the Fourth Proportional to 85,718.07, 128,566.87 and 22,543.12
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Solution
The fourth proportional to 85,718.07, 128,566.87 and 22,543.12 is: 33,811.99
Step by Step Solution
- Step 1: Write the proportion equation
85,718.07 : 128,566.87 = 22,543.12 : x - Step 2: Convert to fraction form
85,718.07/128,566.87 = 22,543.12/x - Step 3: Cross multiply
85,718.07x = 128,566.87 × 22,543.12 - Step 4: Simplify right side
85,718.07x = 2,898,298,378.43 - Step 5: Solve for x
x = 2,898,298,378.43/85,718.07 - Step 6: Final answer
x = 33,811.99
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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.