Finding the Fourth Proportional to 56,217,919.75, 77,579,272.06 and 31,100,956.99
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Solution
The fourth proportional to 56,217,919.75, 77,579,272.06 and 31,100,956.99 is: 42,918,514.49
Step by Step Solution
- Step 1: Write the proportion equation
56,217,919.75 : 77,579,272.06 = 31,100,956.99 : x - Step 2: Convert to fraction form
56,217,919.75/77,579,272.06 = 31,100,956.99/x - Step 3: Cross multiply
56,217,919.75x = 77,579,272.06 × 31,100,956.99 - Step 4: Simplify right side
56,217,919.75x = 2,412,789,603,381,868.50 - Step 5: Solve for x
x = 2,412,789,603,381,868.50/56,217,919.75 - Step 6: Final answer
x = 42,918,514.49
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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.