Finding the Fourth Proportional to 78,217.04, 107,882.16 and 51,349.74
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Solution
The fourth proportional to 78,217.04, 107,882.16 and 51,349.74 is: 70,824.99
Step by Step Solution
- Step 1: Write the proportion equation
78,217.04 : 107,882.16 = 51,349.74 : x - Step 2: Convert to fraction form
78,217.04/107,882.16 = 51,349.74/x - Step 3: Cross multiply
78,217.04x = 107,882.16 × 51,349.74 - Step 4: Simplify right side
78,217.04x = 5,539,720,866.64 - Step 5: Solve for x
x = 5,539,720,866.64/78,217.04 - Step 6: Final answer
x = 70,824.99
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1.5x scale
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.