Finding the Fourth Proportional to 79,149,310.20, 118,723,965.30 and 65,544,420.60
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Solution
The fourth proportional to 79,149,310.20, 118,723,965.30 and 65,544,420.60 is: 98,316,630.90
Step by Step Solution
- Step 1: Write the proportion equation
79,149,310.20 : 118,723,965.30 = 65,544,420.60 : x - Step 2: Convert to fraction form
79,149,310.20/118,723,965.30 = 65,544,420.60/x - Step 3: Cross multiply
79,149,310.20x = 118,723,965.30 × 65,544,420.60 - Step 4: Simplify right side
79,149,310.20x = 7,781,693,516,923,005 - Step 5: Solve for x
x = 7,781,693,516,923,005/79,149,310.20 - Step 6: Final answer
x = 98,316,630.90
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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.