Finding the Fourth Proportional to 77,732.84, 115,993.02 and 69,355.28
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Solution
The fourth proportional to 77,732.84, 115,993.02 and 69,355.28 is: 103,492.02
Step by Step Solution
- Step 1: Write the proportion equation
77,732.84 : 115,993.02 = 69,355.28 : x - Step 2: Convert to fraction form
77,732.84/115,993.02 = 69,355.28/x - Step 3: Cross multiply
77,732.84x = 115,993.02 × 69,355.28 - Step 4: Simplify right side
77,732.84x = 8,044,728,670.13 - Step 5: Solve for x
x = 8,044,728,670.13/77,732.84 - Step 6: Final answer
x = 103,492.02
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.