Finding the Fourth Proportional to 81,705,479.13, 122,534,303.85 and 67,292,799.21
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Solution
The fourth proportional to 81,705,479.13, 122,534,303.85 and 67,292,799.21 is: 100,919,502.50
Step by Step Solution
- Step 1: Write the proportion equation
81,705,479.13 : 122,534,303.85 = 67,292,799.21 : x - Step 2: Convert to fraction form
81,705,479.13/122,534,303.85 = 67,292,799.21/x - Step 3: Cross multiply
81,705,479.13x = 122,534,303.85 × 67,292,799.21 - Step 4: Simplify right side
81,705,479.13x = 8,245,676,305,315,179 - Step 5: Solve for x
x = 8,245,676,305,315,179/81,705,479.13 - Step 6: Final answer
x = 100,919,502.50
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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.