Finding the Fourth Proportional to 85,361.23, 128,107.19 and 38,646.91
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Solution
The fourth proportional to 85,361.23, 128,107.19 and 38,646.91 is: 57,999.95
Step by Step Solution
- Step 1: Write the proportion equation
85,361.23 : 128,107.19 = 38,646.91 : x - Step 2: Convert to fraction form
85,361.23/128,107.19 = 38,646.91/x - Step 3: Cross multiply
85,361.23x = 128,107.19 × 38,646.91 - Step 4: Simplify right side
85,361.23x = 4,950,947,042.28 - Step 5: Solve for x
x = 4,950,947,042.28/85,361.23 - Step 6: Final answer
x = 57,999.95
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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.