Finding the Fourth Proportional to 42,638,684.49, 63,958,037.64 and 11,937,786.84
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Solution
The fourth proportional to 42,638,684.49, 63,958,037.64 and 11,937,786.84 is: 17,906,683.31
Step by Step Solution
- Step 1: Write the proportion equation
42,638,684.49 : 63,958,037.64 = 11,937,786.84 : x - Step 2: Convert to fraction form
42,638,684.49/63,958,037.64 = 11,937,786.84/x - Step 3: Cross multiply
42,638,684.49x = 63,958,037.64 × 11,937,786.84 - Step 4: Simplify right side
42,638,684.49x = 763,517,420,051,016.62 - Step 5: Solve for x
x = 763,517,420,051,016.62/42,638,684.49 - Step 6: Final answer
x = 17,906,683.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.