Finding the Fourth Proportional to 81,648,328.36, 122,472,665.34 and 76,659,868.84
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Solution
The fourth proportional to 81,648,328.36, 122,472,665.34 and 76,659,868.84 is: 114,989,965.50
Step by Step Solution
- Step 1: Write the proportion equation
81,648,328.36 : 122,472,665.34 = 76,659,868.84 : x - Step 2: Convert to fraction form
81,648,328.36/122,472,665.34 = 76,659,868.84/x - Step 3: Cross multiply
81,648,328.36x = 122,472,665.34 × 76,659,868.84 - Step 4: Simplify right side
81,648,328.36x = 9,388,738,461,449,614 - Step 5: Solve for x
x = 9,388,738,461,449,614/81,648,328.36 - Step 6: Final answer
x = 114,989,965.50
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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.