Finding the Fourth Proportional to 77,470.48, 106,919.98 and 43,480.99
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Solution
The fourth proportional to 77,470.48, 106,919.98 and 43,480.99 is: 60,009.78
Step by Step Solution
- Step 1: Write the proportion equation
77,470.48 : 106,919.98 = 43,480.99 : x - Step 2: Convert to fraction form
77,470.48/106,919.98 = 43,480.99/x - Step 3: Cross multiply
77,470.48x = 106,919.98 × 43,480.99 - Step 4: Simplify right side
77,470.48x = 4,648,986,581.18 - Step 5: Solve for x
x = 4,648,986,581.18/77,470.48 - Step 6: Final answer
x = 60,009.78
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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.