Finding the Fourth Proportional to 75,132,972.16, 103,629,840.96 and 68,958,050.56
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Solution
The fourth proportional to 75,132,972.16, 103,629,840.96 and 68,958,050.56 is: 95,112,859.33
Step by Step Solution
- Step 1: Write the proportion equation
75,132,972.16 : 103,629,840.96 = 68,958,050.56 : x - Step 2: Convert to fraction form
75,132,972.16/103,629,840.96 = 68,958,050.56/x - Step 3: Cross multiply
75,132,972.16x = 103,629,840.96 × 68,958,050.56 - Step 4: Simplify right side
75,132,972.16x = 7,146,111,812,444,439 - Step 5: Solve for x
x = 7,146,111,812,444,439/75,132,972.16 - Step 6: Final answer
x = 95,112,859.33
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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.