Finding the Fourth Proportional to 84,015,755.84, 115,963,315.20 and 54,720,090.56
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Solution
The fourth proportional to 84,015,755.84, 115,963,315.20 and 54,720,090.56 is: 75,527,775.07
Step by Step Solution
- Step 1: Write the proportion equation
84,015,755.84 : 115,963,315.20 = 54,720,090.56 : x - Step 2: Convert to fraction form
84,015,755.84/115,963,315.20 = 54,720,090.56/x - Step 3: Cross multiply
84,015,755.84x = 115,963,315.20 × 54,720,090.56 - Step 4: Simplify right side
84,015,755.84x = 6,345,523,109,381,825 - Step 5: Solve for x
x = 6,345,523,109,381,825/84,015,755.84 - Step 6: Final answer
x = 75,527,775.07
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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.