Finding the Fourth Proportional to 90,927.36, 125,479.62 and 50,644.62
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Solution
The fourth proportional to 90,927.36, 125,479.62 and 50,644.62 is: 69,889.50
Step by Step Solution
- Step 1: Write the proportion equation
90,927.36 : 125,479.62 = 50,644.62 : x - Step 2: Convert to fraction form
90,927.36/125,479.62 = 50,644.62/x - Step 3: Cross multiply
90,927.36x = 125,479.62 × 50,644.62 - Step 4: Simplify right side
90,927.36x = 6,354,867,672.64 - Step 5: Solve for x
x = 6,354,867,672.64/90,927.36 - Step 6: Final answer
x = 69,889.50
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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.