Finding the Fourth Proportional to 86,086,980.87, 129,130,564.84 and 21,390,786.17
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Solution
The fourth proportional to 86,086,980.87, 129,130,564.84 and 21,390,786.17 is: 32,086,202.50
Step by Step Solution
- Step 1: Write the proportion equation
86,086,980.87 : 129,130,564.84 = 21,390,786.17 : x - Step 2: Convert to fraction form
86,086,980.87/129,130,564.84 = 21,390,786.17/x - Step 3: Cross multiply
86,086,980.87x = 129,130,564.84 × 21,390,786.17 - Step 4: Simplify right side
86,086,980.87x = 2,762,204,300,503,760.50 - Step 5: Solve for x
x = 2,762,204,300,503,760.50/86,086,980.87 - Step 6: Final answer
x = 32,086,202.50
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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.