Finding the Fourth Proportional to 77,328.98, 115,975.28 and 43,609.50
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Solution
The fourth proportional to 77,328.98, 115,975.28 and 43,609.50 is: 65,403.99
Step by Step Solution
- Step 1: Write the proportion equation
77,328.98 : 115,975.28 = 43,609.50 : x - Step 2: Convert to fraction form
77,328.98/115,975.28 = 43,609.50/x - Step 3: Cross multiply
77,328.98x = 115,975.28 × 43,609.50 - Step 4: Simplify right side
77,328.98x = 5,057,623,973.16 - Step 5: Solve for x
x = 5,057,623,973.16/77,328.98 - Step 6: Final answer
x = 65,403.99
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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.