Finding the Fourth Proportional to 5,168,987.68, 7,133,203.20 and 2,877,099.28
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Solution
The fourth proportional to 5,168,987.68, 7,133,203.20 and 2,877,099.28 is: 3,970,397.12
Step by Step Solution
- Step 1: Write the proportion equation
5,168,987.68 : 7,133,203.20 = 2,877,099.28 : x - Step 2: Convert to fraction form
5,168,987.68/7,133,203.20 = 2,877,099.28/x - Step 3: Cross multiply
5,168,987.68x = 7,133,203.20 × 2,877,099.28 - Step 4: Simplify right side
5,168,987.68x = 20,522,933,790,813.70 - Step 5: Solve for x
x = 20,522,933,790,813.70/5,168,987.68 - Step 6: Final answer
x = 3,970,397.12
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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.