Finding the Fourth Proportional to 90,781.26, 125,281.17 and 49,947.09
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Solution
The fourth proportional to 90,781.26, 125,281.17 and 49,947.09 is: 68,928.65
Step by Step Solution
- Step 1: Write the proportion equation
90,781.26 : 125,281.17 = 49,947.09 : x - Step 2: Convert to fraction form
90,781.26/125,281.17 = 49,947.09/x - Step 3: Cross multiply
90,781.26x = 125,281.17 × 49,947.09 - Step 4: Simplify right side
90,781.26x = 6,257,429,873.30 - Step 5: Solve for x
x = 6,257,429,873.30/90,781.26 - Step 6: Final answer
x = 68,928.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.