Finding the Fourth Proportional to 30,908,457.19, 42,651,537.27 and 17,156,338.75
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Solution
The fourth proportional to 30,908,457.19, 42,651,537.27 and 17,156,338.75 is: 23,674,563.15
Step by Step Solution
- Step 1: Write the proportion equation
30,908,457.19 : 42,651,537.27 = 17,156,338.75 : x - Step 2: Convert to fraction form
30,908,457.19/42,651,537.27 = 17,156,338.75/x - Step 3: Cross multiply
30,908,457.19x = 42,651,537.27 × 17,156,338.75 - Step 4: Simplify right side
30,908,457.19x = 731,744,221,612,370.25 - Step 5: Solve for x
x = 731,744,221,612,370.25/30,908,457.19 - Step 6: Final answer
x = 23,674,563.15
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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.