Finding the Fourth Proportional to 87,689,762.70, 122,967,221.70 and 87,689,762.70
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Solution
The fourth proportional to 87,689,762.70, 122,967,221.70 and 87,689,762.70 is: 122,967,221.70
Step by Step Solution
- Step 1: Write the proportion equation
87,689,762.70 : 122,967,221.70 = 87,689,762.70 : x - Step 2: Convert to fraction form
87,689,762.70/122,967,221.70 = 87,689,762.70/x - Step 3: Cross multiply
87,689,762.70x = 122,967,221.70 × 87,689,762.70 - Step 4: Simplify right side
87,689,762.70x = 10,782,966,490,751,292 - Step 5: Solve for x
x = 10,782,966,490,751,292/87,689,762.70 - Step 6: Final answer
x = 122,967,221.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.