Finding the Fourth Proportional to 39,630,890.70, 55,369,872.90 and 39,630,890.70
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Solution
The fourth proportional to 39,630,890.70, 55,369,872.90 and 39,630,890.70 is: 55,369,872.90
Step by Step Solution
- Step 1: Write the proportion equation
39,630,890.70 : 55,369,872.90 = 39,630,890.70 : x - Step 2: Convert to fraction form
39,630,890.70/55,369,872.90 = 39,630,890.70/x - Step 3: Cross multiply
39,630,890.70x = 55,369,872.90 × 39,630,890.70 - Step 4: Simplify right side
39,630,890.70x = 2,194,357,380,972,792.25 - Step 5: Solve for x
x = 2,194,357,380,972,792.25/39,630,890.70 - Step 6: Final answer
x = 55,369,872.90
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.