Finding the Fourth Proportional to 53,136,220.80, 79,704,331.20 and 48,349,315.20
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Solution
The fourth proportional to 53,136,220.80, 79,704,331.20 and 48,349,315.20 is: 72,523,972.80
Step by Step Solution
- Step 1: Write the proportion equation
53,136,220.80 : 79,704,331.20 = 48,349,315.20 : x - Step 2: Convert to fraction form
53,136,220.80/79,704,331.20 = 48,349,315.20/x - Step 3: Cross multiply
53,136,220.80x = 79,704,331.20 × 48,349,315.20 - Step 4: Simplify right side
53,136,220.80x = 3,853,649,831,993,994.50 - Step 5: Solve for x
x = 3,853,649,831,993,994.50/53,136,220.80 - Step 6: Final answer
x = 72,523,972.80
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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.