Finding the Fourth Proportional to 85,370.09, 128,074.16 and 26,211.74
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Solution
The fourth proportional to 85,370.09, 128,074.16 and 26,211.74 is: 39,323.45
Step by Step Solution
- Step 1: Write the proportion equation
85,370.09 : 128,074.16 = 26,211.74 : x - Step 2: Convert to fraction form
85,370.09/128,074.16 = 26,211.74/x - Step 3: Cross multiply
85,370.09x = 128,074.16 × 26,211.74 - Step 4: Simplify right side
85,370.09x = 3,357,046,007.80 - Step 5: Solve for x
x = 3,357,046,007.80/85,370.09 - Step 6: Final answer
x = 39,323.45
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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.