Finding the Fourth Proportional to 85,128.77, 127,691.98 and 29,007.99
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Solution
The fourth proportional to 85,128.77, 127,691.98 and 29,007.99 is: 43,511.58
Step by Step Solution
- Step 1: Write the proportion equation
85,128.77 : 127,691.98 = 29,007.99 : x - Step 2: Convert to fraction form
85,128.77/127,691.98 = 29,007.99/x - Step 3: Cross multiply
85,128.77x = 127,691.98 × 29,007.99 - Step 4: Simplify right side
85,128.77x = 3,704,087,606.40 - Step 5: Solve for x
x = 3,704,087,606.40/85,128.77 - Step 6: Final answer
x = 43,511.58
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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.