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Finding the Fourth Proportional to 43,640.32, 65,460.48 and 20,254

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Solution

The fourth proportional to 43,640.32, 65,460.48 and 20,254 is: 30,381.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,640.32 : 65,460.48 = 20,254 : x
  2. Step 2: Convert to fraction form
    43,640.32/65,460.48 = 20,254/x
  3. Step 3: Cross multiply
    43,640.32x = 65,460.48 × 20,254
  4. Step 4: Simplify right side
    43,640.32x = 1,325,836,561.92
  5. Step 5: Solve for x
    x = 1,325,836,561.92/43,640.32
  6. Step 6: Final answer
    x = 30,381.00

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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.