Finding the Fourth Proportional to 79,730,235.20, 119,595,352.80 and 74,421,819.20
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Solution
The fourth proportional to 79,730,235.20, 119,595,352.80 and 74,421,819.20 is: 111,632,728.80
Step by Step Solution
- Step 1: Write the proportion equation
79,730,235.20 : 119,595,352.80 = 74,421,819.20 : x - Step 2: Convert to fraction form
79,730,235.20/119,595,352.80 = 74,421,819.20/x - Step 3: Cross multiply
79,730,235.20x = 119,595,352.80 × 74,421,819.20 - Step 4: Simplify right side
79,730,235.20x = 8,900,503,723,241,814 - Step 5: Solve for x
x = 8,900,503,723,241,814/79,730,235.20 - Step 6: Final answer
x = 111,632,728.80
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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.