Finding the Fourth Proportional to 70,738,987.21, 97,618,802.43 and 39,799,082.68
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Solution
The fourth proportional to 70,738,987.21, 97,618,802.43 and 39,799,082.68 is: 54,922,171.52
Step by Step Solution
- Step 1: Write the proportion equation
70,738,987.21 : 97,618,802.43 = 39,799,082.68 : x - Step 2: Convert to fraction form
70,738,987.21/97,618,802.43 = 39,799,082.68/x - Step 3: Cross multiply
70,738,987.21x = 97,618,802.43 × 39,799,082.68 - Step 4: Simplify right side
70,738,987.21x = 3,885,138,789,034,155 - Step 5: Solve for x
x = 3,885,138,789,034,155/70,738,987.21 - Step 6: Final answer
x = 54,922,171.52
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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.