Finding the Fourth Proportional to 77,439.74, 106,904.38 and 51,936.79
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Solution
The fourth proportional to 77,439.74, 106,904.38 and 51,936.79 is: 71,697.95
Step by Step Solution
- Step 1: Write the proportion equation
77,439.74 : 106,904.38 = 51,936.79 : x - Step 2: Convert to fraction form
77,439.74/106,904.38 = 51,936.79/x - Step 3: Cross multiply
77,439.74x = 106,904.38 × 51,936.79 - Step 4: Simplify right side
77,439.74x = 5,552,269,937.04 - Step 5: Solve for x
x = 5,552,269,937.04/77,439.74 - Step 6: Final answer
x = 71,697.95
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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.