Finding the Fourth Proportional to 79,456,280.40, 119,184,420.60 and 47,207,653.20
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Solution
The fourth proportional to 79,456,280.40, 119,184,420.60 and 47,207,653.20 is: 70,811,479.80
Step by Step Solution
- Step 1: Write the proportion equation
79,456,280.40 : 119,184,420.60 = 47,207,653.20 : x - Step 2: Convert to fraction form
79,456,280.40/119,184,420.60 = 47,207,653.20/x - Step 3: Cross multiply
79,456,280.40x = 119,184,420.60 × 47,207,653.20 - Step 4: Simplify right side
79,456,280.40x = 5,626,416,794,527,736 - Step 5: Solve for x
x = 5,626,416,794,527,736/79,456,280.40 - Step 6: Final answer
x = 70,811,479.80
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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.