Finding the Fourth Proportional to 77,880.98, 107,476.17 and 43,889.99
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Solution
The fourth proportional to 77,880.98, 107,476.17 and 43,889.99 is: 60,568.42
Step by Step Solution
- Step 1: Write the proportion equation
77,880.98 : 107,476.17 = 43,889.99 : x - Step 2: Convert to fraction form
77,880.98/107,476.17 = 43,889.99/x - Step 3: Cross multiply
77,880.98x = 107,476.17 × 43,889.99 - Step 4: Simplify right side
77,880.98x = 4,717,127,727.61 - Step 5: Solve for x
x = 4,717,127,727.61/77,880.98 - Step 6: Final answer
x = 60,568.42
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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.