Finding the Fourth Proportional to 42,290,622.60, 63,435,933.90 and 40,107,121.80
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Solution
The fourth proportional to 42,290,622.60, 63,435,933.90 and 40,107,121.80 is: 60,160,682.70
Step by Step Solution
- Step 1: Write the proportion equation
42,290,622.60 : 63,435,933.90 = 40,107,121.80 : x - Step 2: Convert to fraction form
42,290,622.60/63,435,933.90 = 40,107,121.80/x - Step 3: Cross multiply
42,290,622.60x = 63,435,933.90 × 40,107,121.80 - Step 4: Simplify right side
42,290,622.60x = 2,544,232,727,424,049 - Step 5: Solve for x
x = 2,544,232,727,424,049/42,290,622.60 - Step 6: Final answer
x = 60,160,682.70
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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.