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Finding the Fourth Proportional to 43,704.80, 65,589.60 and 28,908.80

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Solution

The fourth proportional to 43,704.80, 65,589.60 and 28,908.80 is: 43,384.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,704.80 : 65,589.60 = 28,908.80 : x
  2. Step 2: Convert to fraction form
    43,704.80/65,589.60 = 28,908.80/x
  3. Step 3: Cross multiply
    43,704.80x = 65,589.60 × 28,908.80
  4. Step 4: Simplify right side
    43,704.80x = 1,896,116,628.48
  5. Step 5: Solve for x
    x = 1,896,116,628.48/43,704.80
  6. Step 6: Final answer
    x = 43,384.63

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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.