Finding the Fourth Proportional to 87,683,919.84, 121,004,039.16 and 48,528,396.72
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Solution
The fourth proportional to 87,683,919.84, 121,004,039.16 and 48,528,396.72 is: 66,969,314.65
Step by Step Solution
- Step 1: Write the proportion equation
87,683,919.84 : 121,004,039.16 = 48,528,396.72 : x - Step 2: Convert to fraction form
87,683,919.84/121,004,039.16 = 48,528,396.72/x - Step 3: Cross multiply
87,683,919.84x = 121,004,039.16 × 48,528,396.72 - Step 4: Simplify right side
87,683,919.84x = 5,872,132,017,078,895 - Step 5: Solve for x
x = 5,872,132,017,078,895/87,683,919.84 - Step 6: Final answer
x = 66,969,314.65
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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.