Finding the Fourth Proportional to 79,185,878.70, 118,778,818.05 and 66,431,294.70
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Solution
The fourth proportional to 79,185,878.70, 118,778,818.05 and 66,431,294.70 is: 99,646,942.05
Step by Step Solution
- Step 1: Write the proportion equation
79,185,878.70 : 118,778,818.05 = 66,431,294.70 : x - Step 2: Convert to fraction form
79,185,878.70/118,778,818.05 = 66,431,294.70/x - Step 3: Cross multiply
79,185,878.70x = 118,778,818.05 × 66,431,294.70 - Step 4: Simplify right side
79,185,878.70x = 7,890,630,665,997,229 - Step 5: Solve for x
x = 7,890,630,665,997,229/79,185,878.70 - Step 6: Final answer
x = 99,646,942.05
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Similar ratio
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1.5x scale
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.