Finding the Fourth Proportional to 76,971,395.31, 115,456,129.57 and 18,679,556.13
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Solution
The fourth proportional to 76,971,395.31, 115,456,129.57 and 18,679,556.13 is: 28,019,100.40
Step by Step Solution
- Step 1: Write the proportion equation
76,971,395.31 : 115,456,129.57 = 18,679,556.13 : x - Step 2: Convert to fraction form
76,971,395.31/115,456,129.57 = 18,679,556.13/x - Step 3: Cross multiply
76,971,395.31x = 115,456,129.57 × 18,679,556.13 - Step 4: Simplify right side
76,971,395.31x = 2,156,669,252,855,367.50 - Step 5: Solve for x
x = 2,156,669,252,855,367.50/76,971,395.31 - Step 6: Final answer
x = 28,019,100.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.