Finding the Fourth Proportional to 48,128,755.09, 66,426,171.80 and 28,560,433.17
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Solution
The fourth proportional to 48,128,755.09, 66,426,171.80 and 28,560,433.17 is: 39,418,435.75
Step by Step Solution
- Step 1: Write the proportion equation
48,128,755.09 : 66,426,171.80 = 28,560,433.17 : x - Step 2: Convert to fraction form
48,128,755.09/66,426,171.80 = 28,560,433.17/x - Step 3: Cross multiply
48,128,755.09x = 66,426,171.80 × 28,560,433.17 - Step 4: Simplify right side
48,128,755.09x = 1,897,160,240,432,838.75 - Step 5: Solve for x
x = 1,897,160,240,432,838.75/48,128,755.09 - Step 6: Final answer
x = 39,418,435.75
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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.