Finding the Fourth Proportional to 73,716,920.40, 110,575,380.60 and 72,282,029.70
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Solution
The fourth proportional to 73,716,920.40, 110,575,380.60 and 72,282,029.70 is: 108,423,044.55
Step by Step Solution
- Step 1: Write the proportion equation
73,716,920.40 : 110,575,380.60 = 72,282,029.70 : x - Step 2: Convert to fraction form
73,716,920.40/110,575,380.60 = 72,282,029.70/x - Step 3: Cross multiply
73,716,920.40x = 110,575,380.60 × 72,282,029.70 - Step 4: Simplify right side
73,716,920.40x = 7,992,612,944,618,004 - Step 5: Solve for x
x = 7,992,612,944,618,004/73,716,920.40 - Step 6: Final answer
x = 108,423,044.55
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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.