Finding the Fourth Proportional to 72,954.99, 109,433.58 and 20,364.75
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Solution
The fourth proportional to 72,954.99, 109,433.58 and 20,364.75 is: 30,547.43
Step by Step Solution
- Step 1: Write the proportion equation
72,954.99 : 109,433.58 = 20,364.75 : x - Step 2: Convert to fraction form
72,954.99/109,433.58 = 20,364.75/x - Step 3: Cross multiply
72,954.99x = 109,433.58 × 20,364.75 - Step 4: Simplify right side
72,954.99x = 2,228,587,498.31 - Step 5: Solve for x
x = 2,228,587,498.31/72,954.99 - Step 6: Final answer
x = 30,547.43
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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.