Finding the Fourth Proportional to 10,472,205.12, 15,710,079.12 and 5,356,855.68
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Solution
The fourth proportional to 10,472,205.12, 15,710,079.12 and 5,356,855.68 is: 8,036,189.67
Step by Step Solution
- Step 1: Write the proportion equation
10,472,205.12 : 15,710,079.12 = 5,356,855.68 : x - Step 2: Convert to fraction form
10,472,205.12/15,710,079.12 = 5,356,855.68/x - Step 3: Cross multiply
10,472,205.12x = 15,710,079.12 × 5,356,855.68 - Step 4: Simplify right side
10,472,205.12x = 84,156,626,567,221.39 - Step 5: Solve for x
x = 84,156,626,567,221.39/10,472,205.12 - Step 6: Final answer
x = 8,036,189.67
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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.