Finding the Fourth Proportional to 81,225.36, 121,858.79 and 31,292.06
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Solution
The fourth proportional to 81,225.36, 121,858.79 and 31,292.06 is: 46,946.07
Step by Step Solution
- Step 1: Write the proportion equation
81,225.36 : 121,858.79 = 31,292.06 : x - Step 2: Convert to fraction form
81,225.36/121,858.79 = 31,292.06/x - Step 3: Cross multiply
81,225.36x = 121,858.79 × 31,292.06 - Step 4: Simplify right side
81,225.36x = 3,813,211,802.45 - Step 5: Solve for x
x = 3,813,211,802.45/81,225.36 - Step 6: Final answer
x = 46,946.07
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.