Finding the Fourth Proportional to 83,648,976.20, 125,473,464.30 and 66,430,287.80
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Solution
The fourth proportional to 83,648,976.20, 125,473,464.30 and 66,430,287.80 is: 99,645,431.70
Step by Step Solution
- Step 1: Write the proportion equation
83,648,976.20 : 125,473,464.30 = 66,430,287.80 : x - Step 2: Convert to fraction form
83,648,976.20/125,473,464.30 = 66,430,287.80/x - Step 3: Cross multiply
83,648,976.20x = 125,473,464.30 × 66,430,287.80 - Step 4: Simplify right side
83,648,976.20x = 8,335,238,344,712,025 - Step 5: Solve for x
x = 8,335,238,344,712,025/83,648,976.20 - Step 6: Final answer
x = 99,645,431.70
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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.