Finding the Fourth Proportional to 87,974,644.60, 131,961,966.90 and 76,637,236.60
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Solution
The fourth proportional to 87,974,644.60, 131,961,966.90 and 76,637,236.60 is: 114,955,854.90
Step by Step Solution
- Step 1: Write the proportion equation
87,974,644.60 : 131,961,966.90 = 76,637,236.60 : x - Step 2: Convert to fraction form
87,974,644.60/131,961,966.90 = 76,637,236.60/x - Step 3: Cross multiply
87,974,644.60x = 131,961,966.90 × 76,637,236.60 - Step 4: Simplify right side
87,974,644.60x = 10,113,200,479,516,668 - Step 5: Solve for x
x = 10,113,200,479,516,668/87,974,644.60 - Step 6: Final answer
x = 114,955,854.90
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1.5x scale
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.