Finding the Fourth Proportional to 78,615,546.80, 117,923,320.20 and 40,351,794.80
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Solution
The fourth proportional to 78,615,546.80, 117,923,320.20 and 40,351,794.80 is: 60,527,692.20
Step by Step Solution
- Step 1: Write the proportion equation
78,615,546.80 : 117,923,320.20 = 40,351,794.80 : x - Step 2: Convert to fraction form
78,615,546.80/117,923,320.20 = 40,351,794.80/x - Step 3: Cross multiply
78,615,546.80x = 117,923,320.20 × 40,351,794.80 - Step 4: Simplify right side
78,615,546.80x = 4,758,417,618,845,095 - Step 5: Solve for x
x = 4,758,417,618,845,095/78,615,546.80 - Step 6: Final answer
x = 60,527,692.20
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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.