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Finding the Fourth Proportional to 54,312.80, 81,469.20 and 43,944.80

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Solution

The fourth proportional to 54,312.80, 81,469.20 and 43,944.80 is: 65,917.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,312.80 : 81,469.20 = 43,944.80 : x
  2. Step 2: Convert to fraction form
    54,312.80/81,469.20 = 43,944.80/x
  3. Step 3: Cross multiply
    54,312.80x = 81,469.20 × 43,944.80
  4. Step 4: Simplify right side
    54,312.80x = 3,580,147,700.16
  5. Step 5: Solve for x
    x = 3,580,147,700.16/54,312.80
  6. Step 6: Final answer
    x = 65,917.20

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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.