Finding the Fourth Proportional to 71,189,431.40, 106,784,147.10 and 38,828,829.80
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Solution
The fourth proportional to 71,189,431.40, 106,784,147.10 and 38,828,829.80 is: 58,243,244.70
Step by Step Solution
- Step 1: Write the proportion equation
71,189,431.40 : 106,784,147.10 = 38,828,829.80 : x - Step 2: Convert to fraction form
71,189,431.40/106,784,147.10 = 38,828,829.80/x - Step 3: Cross multiply
71,189,431.40x = 106,784,147.10 × 38,828,829.80 - Step 4: Simplify right side
71,189,431.40x = 4,146,303,473,084,063 - Step 5: Solve for x
x = 4,146,303,473,084,063/71,189,431.40 - Step 6: Final answer
x = 58,243,244.70
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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.