Finding the Fourth Proportional to 48,128,631.88, 66,426,003.12 and 28,560,309.98
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Solution
The fourth proportional to 48,128,631.88, 66,426,003.12 and 28,560,309.98 is: 39,418,266.54
Step by Step Solution
- Step 1: Write the proportion equation
48,128,631.88 : 66,426,003.12 = 28,560,309.98 : x - Step 2: Convert to fraction form
48,128,631.88/66,426,003.12 = 28,560,309.98/x - Step 3: Cross multiply
48,128,631.88x = 66,426,003.12 × 28,560,309.98 - Step 4: Simplify right side
48,128,631.88x = 1,897,147,239,839,647 - Step 5: Solve for x
x = 1,897,147,239,839,647/48,128,631.88 - Step 6: Final answer
x = 39,418,266.54
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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.