Finding the Fourth Proportional to 79,758,950.80, 119,638,426.20 and 68,279,825.20
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Solution
The fourth proportional to 79,758,950.80, 119,638,426.20 and 68,279,825.20 is: 102,419,737.80
Step by Step Solution
- Step 1: Write the proportion equation
79,758,950.80 : 119,638,426.20 = 68,279,825.20 : x - Step 2: Convert to fraction form
79,758,950.80/119,638,426.20 = 68,279,825.20/x - Step 3: Cross multiply
79,758,950.80x = 119,638,426.20 × 68,279,825.20 - Step 4: Simplify right side
79,758,950.80x = 8,168,890,828,139,101 - Step 5: Solve for x
x = 8,168,890,828,139,101/79,758,950.80 - Step 6: Final answer
x = 102,419,737.80
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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.