Finding the Fourth Proportional to 77,122,331.74, 115,682,997.84 and 19,614,106.45
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Solution
The fourth proportional to 77,122,331.74, 115,682,997.84 and 19,614,106.45 is: 29,421,032.57
Step by Step Solution
- Step 1: Write the proportion equation
77,122,331.74 : 115,682,997.84 = 19,614,106.45 : x - Step 2: Convert to fraction form
77,122,331.74/115,682,997.84 = 19,614,106.45/x - Step 3: Cross multiply
77,122,331.74x = 115,682,997.84 × 19,614,106.45 - Step 4: Simplify right side
77,122,331.74x = 2,269,018,634,088,880 - Step 5: Solve for x
x = 2,269,018,634,088,880/77,122,331.74 - Step 6: Final answer
x = 29,421,032.57
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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.