Finding the Fourth Proportional to 75,780,330.20, 113,670,495.30 and 68,127,579.80
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Solution
The fourth proportional to 75,780,330.20, 113,670,495.30 and 68,127,579.80 is: 102,191,369.70
Step by Step Solution
- Step 1: Write the proportion equation
75,780,330.20 : 113,670,495.30 = 68,127,579.80 : x - Step 2: Convert to fraction form
75,780,330.20/113,670,495.30 = 68,127,579.80/x - Step 3: Cross multiply
75,780,330.20x = 113,670,495.30 × 68,127,579.80 - Step 4: Simplify right side
75,780,330.20x = 7,744,095,739,456,274 - Step 5: Solve for x
x = 7,744,095,739,456,274/75,780,330.20 - Step 6: Final answer
x = 102,191,369.70
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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.