Finding the Fourth Proportional to 30,676,861.84, 42,349,409.94 and 19,078,161.88
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Solution
The fourth proportional to 30,676,861.84, 42,349,409.94 and 19,078,161.88 is: 26,337,403.82
Step by Step Solution
- Step 1: Write the proportion equation
30,676,861.84 : 42,349,409.94 = 19,078,161.88 : x - Step 2: Convert to fraction form
30,676,861.84/42,349,409.94 = 19,078,161.88/x - Step 3: Cross multiply
30,676,861.84x = 42,349,409.94 × 19,078,161.88 - Step 4: Simplify right side
30,676,861.84x = 807,948,898,357,801 - Step 5: Solve for x
x = 807,948,898,357,801/30,676,861.84 - Step 6: Final answer
x = 26,337,403.82
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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.