Finding the Fourth Proportional to 61,894,394.21, 85,378,689.41 and 38,649,169.25
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Solution
The fourth proportional to 61,894,394.21, 85,378,689.41 and 38,649,169.25 is: 53,313,639.45
Step by Step Solution
- Step 1: Write the proportion equation
61,894,394.21 : 85,378,689.41 = 38,649,169.25 : x - Step 2: Convert to fraction form
61,894,394.21/85,378,689.41 = 38,649,169.25/x - Step 3: Cross multiply
61,894,394.21x = 85,378,689.41 × 38,649,169.25 - Step 4: Simplify right side
61,894,394.21x = 3,299,815,417,157,027 - Step 5: Solve for x
x = 3,299,815,417,157,027/61,894,394.21 - Step 6: Final answer
x = 53,313,639.45
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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.