Finding the Fourth Proportional to 66,777,728.89, 92,239,710.11 and 55,221,970.81
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Solution
The fourth proportional to 66,777,728.89, 92,239,710.11 and 55,221,970.81 is: 76,277,804.94
Step by Step Solution
- Step 1: Write the proportion equation
66,777,728.89 : 92,239,710.11 = 55,221,970.81 : x - Step 2: Convert to fraction form
66,777,728.89/92,239,710.11 = 55,221,970.81/x - Step 3: Cross multiply
66,777,728.89x = 92,239,710.11 × 55,221,970.81 - Step 4: Simplify right side
66,777,728.89x = 5,093,658,578,941,172 - Step 5: Solve for x
x = 5,093,658,578,941,172/66,777,728.89 - Step 6: Final answer
x = 76,277,804.94
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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.