Finding the Fourth Proportional to 100,037,634.73, 138,048,969.98 and 55,385,596.20
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Solution
The fourth proportional to 100,037,634.73, 138,048,969.98 and 55,385,596.20 is: 76,430,480.66
Step by Step Solution
- Step 1: Write the proportion equation
100,037,634.73 : 138,048,969.98 = 55,385,596.20 : x - Step 2: Convert to fraction form
100,037,634.73/138,048,969.98 = 55,385,596.20/x - Step 3: Cross multiply
100,037,634.73x = 138,048,969.98 × 55,385,596.20 - Step 4: Simplify right side
100,037,634.73x = 7,645,924,506,309,493 - Step 5: Solve for x
x = 7,645,924,506,309,493/100,037,634.73 - Step 6: Final answer
x = 76,430,480.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.