Finding the Fourth Proportional to 30,985,249.06, 42,758,785.20 and 16,855,967.08
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Solution
The fourth proportional to 30,985,249.06, 42,758,785.20 and 16,855,967.08 is: 23,260,767.55
Step by Step Solution
- Step 1: Write the proportion equation
30,985,249.06 : 42,758,785.20 = 16,855,967.08 : x - Step 2: Convert to fraction form
30,985,249.06/42,758,785.20 = 16,855,967.08/x - Step 3: Cross multiply
30,985,249.06x = 42,758,785.20 × 16,855,967.08 - Step 4: Simplify right side
30,985,249.06x = 720,740,675,711,991.25 - Step 5: Solve for x
x = 720,740,675,711,991.25/30,985,249.06 - Step 6: Final answer
x = 23,260,767.55
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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.