Finding the Fourth Proportional to 90,783.74, 125,279.74 and 50,496.62
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Solution
The fourth proportional to 90,783.74, 125,279.74 and 50,496.62 is: 69,684.32
Step by Step Solution
- Step 1: Write the proportion equation
90,783.74 : 125,279.74 = 50,496.62 : x - Step 2: Convert to fraction form
90,783.74/125,279.74 = 50,496.62/x - Step 3: Cross multiply
90,783.74x = 125,279.74 × 50,496.62 - Step 4: Simplify right side
90,783.74x = 6,326,203,424.48 - Step 5: Solve for x
x = 6,326,203,424.48/90,783.74 - Step 6: Final answer
x = 69,684.32
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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.