Finding the Fourth Proportional to 81,490,644.40, 122,235,966.60 and 26,911,653.70
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Solution
The fourth proportional to 81,490,644.40, 122,235,966.60 and 26,911,653.70 is: 40,367,480.55
Step by Step Solution
- Step 1: Write the proportion equation
81,490,644.40 : 122,235,966.60 = 26,911,653.70 : x - Step 2: Convert to fraction form
81,490,644.40/122,235,966.60 = 26,911,653.70/x - Step 3: Cross multiply
81,490,644.40x = 122,235,966.60 × 26,911,653.70 - Step 4: Simplify right side
81,490,644.40x = 3,289,572,002,823,966 - Step 5: Solve for x
x = 3,289,572,002,823,966/81,490,644.40 - Step 6: Final answer
x = 40,367,480.55
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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.