Finding the Fourth Proportional to 85,442.53, 128,176.08 and 26,283.19
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Solution
The fourth proportional to 85,442.53, 128,176.08 and 26,283.19 is: 39,428.56
Step by Step Solution
- Step 1: Write the proportion equation
85,442.53 : 128,176.08 = 26,283.19 : x - Step 2: Convert to fraction form
85,442.53/128,176.08 = 26,283.19/x - Step 3: Cross multiply
85,442.53x = 128,176.08 × 26,283.19 - Step 4: Simplify right side
85,442.53x = 3,368,876,264.10 - Step 5: Solve for x
x = 3,368,876,264.10/85,442.53 - Step 6: Final answer
x = 39,428.56
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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.