Finding the Fourth Proportional to 85,909.69, 128,833.62 and 29,734.53
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Solution
The fourth proportional to 85,909.69, 128,833.62 and 29,734.53 is: 44,591.09
Step by Step Solution
- Step 1: Write the proportion equation
85,909.69 : 128,833.62 = 29,734.53 : x - Step 2: Convert to fraction form
85,909.69/128,833.62 = 29,734.53/x - Step 3: Cross multiply
85,909.69x = 128,833.62 × 29,734.53 - Step 4: Simplify right side
85,909.69x = 3,830,807,138.90 - Step 5: Solve for x
x = 3,830,807,138.90/85,909.69 - Step 6: Final answer
x = 44,591.09
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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.