Finding the Fourth Proportional to 71,218,404.70, 106,827,607.05 and 66,440,830.30
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Solution
The fourth proportional to 71,218,404.70, 106,827,607.05 and 66,440,830.30 is: 99,661,245.45
Step by Step Solution
- Step 1: Write the proportion equation
71,218,404.70 : 106,827,607.05 = 66,440,830.30 : x - Step 2: Convert to fraction form
71,218,404.70/106,827,607.05 = 66,440,830.30/x - Step 3: Cross multiply
71,218,404.70x = 106,827,607.05 × 66,440,830.30 - Step 4: Simplify right side
71,218,404.70x = 7,097,714,911,364,133 - Step 5: Solve for x
x = 7,097,714,911,364,133/71,218,404.70 - Step 6: Final answer
x = 99,661,245.45
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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.