Finding the Fourth Proportional to 68,497,963.19, 94,540,921.77 and 40,636,138.49
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Solution
The fourth proportional to 68,497,963.19, 94,540,921.77 and 40,636,138.49 is: 56,086,017.91
Step by Step Solution
- Step 1: Write the proportion equation
68,497,963.19 : 94,540,921.77 = 40,636,138.49 : x - Step 2: Convert to fraction form
68,497,963.19/94,540,921.77 = 40,636,138.49/x - Step 3: Cross multiply
68,497,963.19x = 94,540,921.77 × 40,636,138.49 - Step 4: Simplify right side
68,497,963.19x = 3,841,777,990,017,976 - Step 5: Solve for x
x = 3,841,777,990,017,976/68,497,963.19 - Step 6: Final answer
x = 56,086,017.91
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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.