Finding the Fourth Proportional to 86,207,266.80, 129,310,900.20 and 76,853,905.20
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Solution
The fourth proportional to 86,207,266.80, 129,310,900.20 and 76,853,905.20 is: 115,280,857.80
Step by Step Solution
- Step 1: Write the proportion equation
86,207,266.80 : 129,310,900.20 = 76,853,905.20 : x - Step 2: Convert to fraction form
86,207,266.80/129,310,900.20 = 76,853,905.20/x - Step 3: Cross multiply
86,207,266.80x = 129,310,900.20 × 76,853,905.20 - Step 4: Simplify right side
86,207,266.80x = 9,938,047,665,297,462 - Step 5: Solve for x
x = 9,938,047,665,297,462/86,207,266.80 - Step 6: Final answer
x = 115,280,857.80
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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.