Finding the Fourth Proportional to 33,216,372.68, 45,839,954.58 and 20,988,768.20
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Solution
The fourth proportional to 33,216,372.68, 45,839,954.58 and 20,988,768.20 is: 28,965,359.65
Step by Step Solution
- Step 1: Write the proportion equation
33,216,372.68 : 45,839,954.58 = 20,988,768.20 : x - Step 2: Convert to fraction form
33,216,372.68/45,839,954.58 = 20,988,768.20/x - Step 3: Cross multiply
33,216,372.68x = 45,839,954.58 × 20,988,768.20 - Step 4: Simplify right side
33,216,372.68x = 962,124,180,978,148.25 - Step 5: Solve for x
x = 962,124,180,978,148.25/33,216,372.68 - Step 6: Final answer
x = 28,965,359.65
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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.