Finding the Fourth Proportional to 75,219,605.71, 103,817,942.49 and 48,790,712.63
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Solution
The fourth proportional to 75,219,605.71, 103,817,942.49 and 48,790,712.63 is: 67,340,839.53
Step by Step Solution
- Step 1: Write the proportion equation
75,219,605.71 : 103,817,942.49 = 48,790,712.63 : x - Step 2: Convert to fraction form
75,219,605.71/103,817,942.49 = 48,790,712.63/x - Step 3: Cross multiply
75,219,605.71x = 103,817,942.49 × 48,790,712.63 - Step 4: Simplify right side
75,219,605.71x = 5,065,351,397,725,991 - Step 5: Solve for x
x = 5,065,351,397,725,991/75,219,605.71 - Step 6: Final answer
x = 67,340,839.53
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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.