Finding the Fourth Proportional to 81,201.60, 121,802.94 and 28,612.08
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Solution
The fourth proportional to 81,201.60, 121,802.94 and 28,612.08 is: 42,918.31
Step by Step Solution
- Step 1: Write the proportion equation
81,201.60 : 121,802.94 = 28,612.08 : x - Step 2: Convert to fraction form
81,201.60/121,802.94 = 28,612.08/x - Step 3: Cross multiply
81,201.60x = 121,802.94 × 28,612.08 - Step 4: Simplify right side
81,201.60x = 3,485,035,463.52 - Step 5: Solve for x
x = 3,485,035,463.52/81,201.60 - Step 6: Final answer
x = 42,918.31
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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.