Finding the Fourth Proportional to 77,122,330.74, 115,682,996.34 and 19,614,105.45
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Solution
The fourth proportional to 77,122,330.74, 115,682,996.34 and 19,614,105.45 is: 29,421,031.07
Step by Step Solution
- Step 1: Write the proportion equation
77,122,330.74 : 115,682,996.34 = 19,614,105.45 : x - Step 2: Convert to fraction form
77,122,330.74/115,682,996.34 = 19,614,105.45/x - Step 3: Cross multiply
77,122,330.74x = 115,682,996.34 × 19,614,105.45 - Step 4: Simplify right side
77,122,330.74x = 2,269,018,488,984,724 - Step 5: Solve for x
x = 2,269,018,488,984,724/77,122,330.74 - Step 6: Final answer
x = 29,421,031.07
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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.