Finding the Fourth Proportional to 81,389,276.80, 122,083,915.20 and 27,536,588.80
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Solution
The fourth proportional to 81,389,276.80, 122,083,915.20 and 27,536,588.80 is: 41,304,883.20
Step by Step Solution
- Step 1: Write the proportion equation
81,389,276.80 : 122,083,915.20 = 27,536,588.80 : x - Step 2: Convert to fraction form
81,389,276.80/122,083,915.20 = 27,536,588.80/x - Step 3: Cross multiply
81,389,276.80x = 122,083,915.20 × 27,536,588.80 - Step 4: Simplify right side
81,389,276.80x = 3,361,774,571,956,470 - Step 5: Solve for x
x = 3,361,774,571,956,470/81,389,276.80 - Step 6: Final answer
x = 41,304,883.20
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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.