Finding the Fourth Proportional to 99,681.84, 149,507.91 and 40,517.28
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Solution
The fourth proportional to 99,681.84, 149,507.91 and 40,517.28 is: 60,769.88
Step by Step Solution
- Step 1: Write the proportion equation
99,681.84 : 149,507.91 = 40,517.28 : x - Step 2: Convert to fraction form
99,681.84/149,507.91 = 40,517.28/x - Step 3: Cross multiply
99,681.84x = 149,507.91 × 40,517.28 - Step 4: Simplify right side
99,681.84x = 6,057,653,851.68 - Step 5: Solve for x
x = 6,057,653,851.68/99,681.84 - Step 6: Final answer
x = 60,769.88
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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.