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Finding the Fourth Proportional to 43,626.40, 65,458.80 and 20,240.80

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Solution

The fourth proportional to 43,626.40, 65,458.80 and 20,240.80 is: 30,370.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,626.40 : 65,458.80 = 20,240.80 : x
  2. Step 2: Convert to fraction form
    43,626.40/65,458.80 = 20,240.80/x
  3. Step 3: Cross multiply
    43,626.40x = 65,458.80 × 20,240.80
  4. Step 4: Simplify right side
    43,626.40x = 1,324,938,479.04
  5. Step 5: Solve for x
    x = 1,324,938,479.04/43,626.40
  6. Step 6: Final answer
    x = 30,370.11

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1.5x scale

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.