Finding the Fourth Proportional to 68,121,131.81, 94,130,130.80 and 48,507,969.70
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Solution
The fourth proportional to 68,121,131.81, 94,130,130.80 and 48,507,969.70 is: 67,028,562.38
Step by Step Solution
- Step 1: Write the proportion equation
68,121,131.81 : 94,130,130.80 = 48,507,969.70 : x - Step 2: Convert to fraction form
68,121,131.81/94,130,130.80 = 48,507,969.70/x - Step 3: Cross multiply
68,121,131.81x = 94,130,130.80 × 48,507,969.70 - Step 4: Simplify right side
68,121,131.81x = 4,566,061,532,589,381 - Step 5: Solve for x
x = 4,566,061,532,589,381/68,121,131.81 - Step 6: Final answer
x = 67,028,562.38
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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.