Finding the Fourth Proportional to 87,689,579.70, 122,966,965.50 and 87,689,579.70
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Solution
The fourth proportional to 87,689,579.70, 122,966,965.50 and 87,689,579.70 is: 122,966,965.50
Step by Step Solution
- Step 1: Write the proportion equation
87,689,579.70 : 122,966,965.50 = 87,689,579.70 : x - Step 2: Convert to fraction form
87,689,579.70/122,966,965.50 = 87,689,579.70/x - Step 3: Cross multiply
87,689,579.70x = 122,966,965.50 × 87,689,579.70 - Step 4: Simplify right side
87,689,579.70x = 10,782,921,521,679,400 - Step 5: Solve for x
x = 10,782,921,521,679,400/87,689,579.70 - Step 6: Final answer
x = 122,966,965.50
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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.