Finding the Fourth Proportional to 85,752.19, 128,641.92 and 26,575.62
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Solution
The fourth proportional to 85,752.19, 128,641.92 and 26,575.62 is: 39,867.66
Step by Step Solution
- Step 1: Write the proportion equation
85,752.19 : 128,641.92 = 26,575.62 : x - Step 2: Convert to fraction form
85,752.19/128,641.92 = 26,575.62/x - Step 3: Cross multiply
85,752.19x = 128,641.92 × 26,575.62 - Step 4: Simplify right side
85,752.19x = 3,418,738,781.99 - Step 5: Solve for x
x = 3,418,738,781.99/85,752.19 - Step 6: Final answer
x = 39,867.66
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1.5x scale
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.