Finding the Fourth Proportional to 7,381,135.80, 11,071,703.70 and 6,707,977.20
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Solution
The fourth proportional to 7,381,135.80, 11,071,703.70 and 6,707,977.20 is: 10,061,965.80
Step by Step Solution
- Step 1: Write the proportion equation
7,381,135.80 : 11,071,703.70 = 6,707,977.20 : x - Step 2: Convert to fraction form
7,381,135.80/11,071,703.70 = 6,707,977.20/x - Step 3: Cross multiply
7,381,135.80x = 11,071,703.70 × 6,707,977.20 - Step 4: Simplify right side
7,381,135.80x = 74,268,735,984,755.64 - Step 5: Solve for x
x = 74,268,735,984,755.64/7,381,135.80 - Step 6: Final answer
x = 10,061,965.80
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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.