Finding the Fourth Proportional to 83,378.84, 115,163.80 and 60,681.84
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Solution
The fourth proportional to 83,378.84, 115,163.80 and 60,681.84 is: 83,814.45
Step by Step Solution
- Step 1: Write the proportion equation
83,378.84 : 115,163.80 = 60,681.84 : x - Step 2: Convert to fraction form
83,378.84/115,163.80 = 60,681.84/x - Step 3: Cross multiply
83,378.84x = 115,163.80 × 60,681.84 - Step 4: Simplify right side
83,378.84x = 6,988,351,285.39 - Step 5: Solve for x
x = 6,988,351,285.39/83,378.84 - Step 6: Final answer
x = 83,814.45
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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.