Finding the Fourth Proportional to 81,392,154.40, 122,088,231.60 and 55,564,121.80
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Solution
The fourth proportional to 81,392,154.40, 122,088,231.60 and 55,564,121.80 is: 83,346,182.70
Step by Step Solution
- Step 1: Write the proportion equation
81,392,154.40 : 122,088,231.60 = 55,564,121.80 : x - Step 2: Convert to fraction form
81,392,154.40/122,088,231.60 = 55,564,121.80/x - Step 3: Cross multiply
81,392,154.40x = 122,088,231.60 × 55,564,121.80 - Step 4: Simplify right side
81,392,154.40x = 6,783,725,370,969,008 - Step 5: Solve for x
x = 6,783,725,370,969,008/81,392,154.40 - Step 6: Final answer
x = 83,346,182.70
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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.