Finding the Fourth Proportional to 79,728,281.20, 119,592,421.80 and 43,354,097.20
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Solution
The fourth proportional to 79,728,281.20, 119,592,421.80 and 43,354,097.20 is: 65,031,145.80
Step by Step Solution
- Step 1: Write the proportion equation
79,728,281.20 : 119,592,421.80 = 43,354,097.20 : x - Step 2: Convert to fraction form
79,728,281.20/119,592,421.80 = 43,354,097.20/x - Step 3: Cross multiply
79,728,281.20x = 119,592,421.80 × 43,354,097.20 - Step 4: Simplify right side
79,728,281.20x = 5,184,821,479,100,599 - Step 5: Solve for x
x = 5,184,821,479,100,599/79,728,281.20 - Step 6: Final answer
x = 65,031,145.80
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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.