Finding the Fourth Proportional to 71,338,817.85, 98,449,992.09 and 68,069,957.49
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Solution
The fourth proportional to 71,338,817.85, 98,449,992.09 and 68,069,957.49 is: 93,938,853.75
Step by Step Solution
- Step 1: Write the proportion equation
71,338,817.85 : 98,449,992.09 = 68,069,957.49 : x - Step 2: Convert to fraction form
71,338,817.85/98,449,992.09 = 68,069,957.49/x - Step 3: Cross multiply
71,338,817.85x = 98,449,992.09 × 68,069,957.49 - Step 4: Simplify right side
71,338,817.85x = 6,701,486,776,457,136 - Step 5: Solve for x
x = 6,701,486,776,457,136/71,338,817.85 - Step 6: Final answer
x = 93,938,853.75
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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.