Finding the Fourth Proportional to 55,215,121.34, 82,821,972.54 and 18,343,965.36
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Solution
The fourth proportional to 55,215,121.34, 82,821,972.54 and 18,343,965.36 is: 27,515,712.33
Step by Step Solution
- Step 1: Write the proportion equation
55,215,121.34 : 82,821,972.54 = 18,343,965.36 : x - Step 2: Convert to fraction form
55,215,121.34/82,821,972.54 = 18,343,965.36/x - Step 3: Cross multiply
55,215,121.34x = 82,821,972.54 × 18,343,965.36 - Step 4: Simplify right side
55,215,121.34x = 1,519,283,395,320,631.25 - Step 5: Solve for x
x = 1,519,283,395,320,631.25/55,215,121.34 - Step 6: Final answer
x = 27,515,712.33
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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.