Finding the Fourth Proportional to 66,823,903.20, 100,235,854.80 and 53,386,975.20
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Solution
The fourth proportional to 66,823,903.20, 100,235,854.80 and 53,386,975.20 is: 80,080,462.80
Step by Step Solution
- Step 1: Write the proportion equation
66,823,903.20 : 100,235,854.80 = 53,386,975.20 : x - Step 2: Convert to fraction form
66,823,903.20/100,235,854.80 = 53,386,975.20/x - Step 3: Cross multiply
66,823,903.20x = 100,235,854.80 × 53,386,975.20 - Step 4: Simplify right side
66,823,903.20x = 5,351,289,094,358,401 - Step 5: Solve for x
x = 5,351,289,094,358,401/66,823,903.20 - Step 6: Final answer
x = 80,080,462.80
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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.