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Finding the Fourth Proportional to 43,908.80, 65,863.20 and 43,325.60

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Solution

The fourth proportional to 43,908.80, 65,863.20 and 43,325.60 is: 64,988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,908.80 : 65,863.20 = 43,325.60 : x
  2. Step 2: Convert to fraction form
    43,908.80/65,863.20 = 43,325.60/x
  3. Step 3: Cross multiply
    43,908.80x = 65,863.20 × 43,325.60
  4. Step 4: Simplify right side
    43,908.80x = 2,853,562,657.92
  5. Step 5: Solve for x
    x = 2,853,562,657.92/43,908.80
  6. Step 6: Final answer
    x = 64,988.40

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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.