Finding the Fourth Proportional to 10,125,206.45, 13,972,821.93 and 5,478,991.53
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Solution
The fourth proportional to 10,125,206.45, 13,972,821.93 and 5,478,991.53 is: 7,561,028.35
Step by Step Solution
- Step 1: Write the proportion equation
10,125,206.45 : 13,972,821.93 = 5,478,991.53 : x - Step 2: Convert to fraction form
10,125,206.45/13,972,821.93 = 5,478,991.53/x - Step 3: Cross multiply
10,125,206.45x = 13,972,821.93 × 5,478,991.53 - Step 4: Simplify right side
10,125,206.45x = 76,556,973,004,668.25 - Step 5: Solve for x
x = 76,556,973,004,668.25/10,125,206.45 - Step 6: Final answer
x = 7,561,028.35
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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.