Finding the Fourth Proportional to 77,278,682.44, 106,646,981.70 and 42,470,740.36
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Solution
The fourth proportional to 77,278,682.44, 106,646,981.70 and 42,470,740.36 is: 58,610,940.65
Step by Step Solution
- Step 1: Write the proportion equation
77,278,682.44 : 106,646,981.70 = 42,470,740.36 : x - Step 2: Convert to fraction form
77,278,682.44/106,646,981.70 = 42,470,740.36/x - Step 3: Cross multiply
77,278,682.44x = 106,646,981.70 × 42,470,740.36 - Step 4: Simplify right side
77,278,682.44x = 4,529,376,269,958,371 - Step 5: Solve for x
x = 4,529,376,269,958,371/77,278,682.44 - Step 6: Final answer
x = 58,610,940.65
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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.