Finding the Fourth Proportional to 77,867.20, 107,465.14 and 47,672.84
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Solution
The fourth proportional to 77,867.20, 107,465.14 and 47,672.84 is: 65,793.66
Step by Step Solution
- Step 1: Write the proportion equation
77,867.20 : 107,465.14 = 47,672.84 : x - Step 2: Convert to fraction form
77,867.20/107,465.14 = 47,672.84/x - Step 3: Cross multiply
77,867.20x = 107,465.14 × 47,672.84 - Step 4: Simplify right side
77,867.20x = 5,123,168,424.80 - Step 5: Solve for x
x = 5,123,168,424.80/77,867.20 - Step 6: Final answer
x = 65,793.66
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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.