Finding the Fourth Proportional to 70,738,986.21, 97,618,801.05 and 39,799,081.68
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Solution
The fourth proportional to 70,738,986.21, 97,618,801.05 and 39,799,081.68 is: 54,922,170.14
Step by Step Solution
- Step 1: Write the proportion equation
70,738,986.21 : 97,618,801.05 = 39,799,081.68 : x - Step 2: Convert to fraction form
70,738,986.21/97,618,801.05 = 39,799,081.68/x - Step 3: Cross multiply
70,738,986.21x = 97,618,801.05 × 39,799,081.68 - Step 4: Simplify right side
70,738,986.21x = 3,885,138,636,492,619.50 - Step 5: Solve for x
x = 3,885,138,636,492,619.50/70,738,986.21 - Step 6: Final answer
x = 54,922,170.14
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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.