Finding the Fourth Proportional to 85,378.91, 117,829.64 and 49,580.15
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Solution
The fourth proportional to 85,378.91, 117,829.64 and 49,580.15 is: 68,424.52
Step by Step Solution
- Step 1: Write the proportion equation
85,378.91 : 117,829.64 = 49,580.15 : x - Step 2: Convert to fraction form
85,378.91/117,829.64 = 49,580.15/x - Step 3: Cross multiply
85,378.91x = 117,829.64 × 49,580.15 - Step 4: Simplify right side
85,378.91x = 5,842,011,225.65 - Step 5: Solve for x
x = 5,842,011,225.65/85,378.91 - Step 6: Final answer
x = 68,424.52
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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.