Finding the Fourth Proportional to 72,718,504.80, 109,077,757.20 and 29,618,639.70
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Solution
The fourth proportional to 72,718,504.80, 109,077,757.20 and 29,618,639.70 is: 44,427,959.55
Step by Step Solution
- Step 1: Write the proportion equation
72,718,504.80 : 109,077,757.20 = 29,618,639.70 : x - Step 2: Convert to fraction form
72,718,504.80/109,077,757.20 = 29,618,639.70/x - Step 3: Cross multiply
72,718,504.80x = 109,077,757.20 × 29,618,639.70 - Step 4: Simplify right side
72,718,504.80x = 3,230,734,789,790,881 - Step 5: Solve for x
x = 3,230,734,789,790,881/72,718,504.80 - Step 6: Final answer
x = 44,427,959.55
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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.